Google Git
Sign in
chromium / chromium / src.git / 3b001a060966fe988497a2d310f826334e64b3a5 / . / chrome / browser / chrome_browser_main.cc
blob: 9b172d1e0116492817afb7fe25394ef013e4592e [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/chrome_browser_main.h"
#include <algorithm>
#include <string>
#include <vector>
#include "base/at_exit.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/debug/trace_event.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram.h"
#include "base/path_service.h"
#include "base/process_util.h"
#include "base/string_number_conversions.h"
#include "base/string_piece.h"
#include "base/string_split.h"
#include "base/string_util.h"
#include "base/sys_string_conversions.h"
#include "base/threading/platform_thread.h"
#include "base/time.h"
#include "base/utf_string_conversions.h"
#include "base/values.h"
#include "build/build_config.h"
#include "chrome/browser/about_flags.h"
#include "chrome/browser/auto_launch_trial.h"
#include "chrome/browser/autocomplete/autocomplete_field_trial.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/browser_process_impl.h"
#include "chrome/browser/browser_shutdown.h"
#include "chrome/browser/chrome_browser_main_extra_parts.h"
#include "chrome/browser/defaults.h"
#include "chrome/browser/extensions/default_apps_trial.h"
#include "chrome/browser/extensions/extension_protocols.h"
#include "chrome/browser/extensions/extension_service.h"
#include "chrome/browser/extensions/extensions_startup.h"
#include "chrome/browser/first_run/upgrade_util.h"
#include "chrome/browser/google/google_search_counter.h"
#include "chrome/browser/google/google_url_tracker.h"
#include "chrome/browser/google/google_util.h"
#include "chrome/browser/gpu_blacklist.h"
#include "chrome/browser/gpu_util.h"
#include "chrome/browser/instant/instant_field_trial.h"
#include "chrome/browser/jankometer.h"
#include "chrome/browser/language_usage_metrics.h"
#include "chrome/browser/metrics/histogram_synchronizer.h"
#include "chrome/browser/metrics/field_trial_synchronizer.h"
#include "chrome/browser/metrics/metrics_log.h"
#include "chrome/browser/metrics/metrics_service.h"
#include "chrome/browser/metrics/thread_watcher.h"
#include "chrome/browser/metrics/tracking_synchronizer.h"
#include "chrome/browser/nacl_host/nacl_process_host.h"
#include "chrome/browser/net/chrome_net_log.h"
#include "chrome/browser/net/chrome_network_delegate.h"
#include "chrome/browser/net/predictor.h"
#include "chrome/browser/notifications/desktop_notification_service.h"
#include "chrome/browser/notifications/desktop_notification_service_factory.h"
#include "chrome/browser/plugin_prefs.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/prefs/pref_value_store.h"
#include "chrome/browser/prefs/scoped_user_pref_update.h"
#include "chrome/browser/prerender/prerender_field_trial.h"
#include "chrome/browser/printing/cloud_print/cloud_print_proxy_service.h"
#include "chrome/browser/printing/cloud_print/cloud_print_proxy_service_factory.h"
#include "chrome/browser/process_singleton.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_manager.h"
#include "chrome/browser/search_engines/search_engine_type.h"
#include "chrome/browser/search_engines/template_url.h"
#include "chrome/browser/search_engines/template_url_prepopulate_data.h"
#include "chrome/browser/search_engines/template_url_service.h"
#include "chrome/browser/search_engines/template_url_service_factory.h"
#include "chrome/browser/service/service_process_control.h"
#include "chrome/browser/shell_integration.h"
#include "chrome/browser/translate/translate_manager.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_init.h"
#include "chrome/browser/ui/webui/chrome_url_data_manager_backend.h"
#include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
#include "chrome/common/child_process_logging.h"
#include "chrome/common/chrome_constants.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/chrome_result_codes.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/chrome_version_info.h"
#include "chrome/common/env_vars.h"
#include "chrome/common/json_pref_store.h"
#include "chrome/common/jstemplate_builder.h"
#include "chrome/common/logging_chrome.h"
#include "chrome/common/net/net_resource_provider.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/profiling.h"
#include "chrome/installer/util/google_update_settings.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/gpu_data_manager.h"
#include "content/public/common/content_client.h"
#include "content/public/common/main_function_params.h"
#include "grit/app_locale_settings.h"
#include "grit/browser_resources.h"
#include "grit/chromium_strings.h"
#include "grit/generated_resources.h"
#include "grit/platform_locale_settings.h"
#include "net/base/net_module.h"
#include "net/base/sdch_manager.h"
#include "net/cookies/cookie_monster.h"
#include "net/http/http_basic_stream.h"
#include "net/http/http_network_layer.h"
#include "net/http/http_stream_factory.h"
#include "net/socket/client_socket_pool_base.h"
#include "net/socket/client_socket_pool_manager.h"
#include "net/spdy/spdy_session.h"
#include "net/spdy/spdy_session_pool.h"
#include "net/url_request/url_request.h"
#include "net/url_request/url_request_throttler_manager.h"
#include "net/websockets/websocket_job.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#if defined(USE_LINUX_BREAKPAD)
#include "base/linux_util.h"
#include "chrome/app/breakpad_linux.h"
#endif
#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
#include "chrome/browser/first_run/upgrade_util_linux.h"
#endif
#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/cros/cros_library.h"
#include "chrome/browser/chromeos/cros_settings.h"
#include "chrome/browser/chromeos/cros_settings_names.h"
#endif
// TODO(port): several win-only methods have been pulled out of this, but
// BrowserMain() as a whole needs to be broken apart so that it's usable by
// other platforms. For now, it's just a stub. This is a serious work in
// progress and should not be taken as an indication of a real refactoring.
#if defined(OS_WIN)
#include "base/environment.h" // For PreRead experiment.
#include "base/win/windows_version.h"
#include "chrome/browser/browser_trial.h"
#include "chrome/browser/browser_util_win.h"
#include "chrome/browser/chrome_browser_main_win.h"
#include "chrome/browser/first_run/try_chrome_dialog_view.h"
#include "chrome/browser/first_run/upgrade_util_win.h"
#include "chrome/browser/net/url_fixer_upper.h"
#include "chrome/browser/ui/views/user_data_dir_dialog.h"
#include "chrome/installer/util/helper.h"
#include "chrome/installer/util/install_util.h"
#include "chrome/installer/util/shell_util.h"
#include "net/base/net_util.h"
#include "printing/printed_document.h"
#include "ui/base/l10n/l10n_util_win.h"
#endif // defined(OS_WIN)
#if defined(OS_MACOSX)
#include <Security/Security.h>
#include "base/mac/scoped_nsautorelease_pool.h"
#include "chrome/browser/mac/keystone_glue.h"
#endif
#if defined(ENABLE_RLZ)
#include "chrome/browser/rlz/rlz.h"
#endif
#if defined(TOOLKIT_VIEWS)
#include "ui/views/focus/accelerator_handler.h"
#endif
#if defined(TOOLKIT_GTK)
#include "chrome/browser/ui/gtk/gtk_util.h"
#include "ui/gfx/gtk_util.h"
#endif
#if defined(USE_X11)
#include "chrome/browser/chrome_browser_main_x11.h"
#endif
#if defined(USE_AURA)
#include "ash/shell.h"
#include "ui/aura/root_window.h"
#endif
using content::BrowserThread;
namespace net {
class NetLog;
} // namespace net
namespace {
// This function provides some ways to test crash and assertion handling
// behavior of the program.
void HandleTestParameters(const CommandLine& command_line) {
// This parameter causes an assertion.
if (command_line.HasSwitch(switches::kBrowserAssertTest)) {
DCHECK(false);
}
// This parameter causes a null pointer crash (crash reporter trigger).
if (command_line.HasSwitch(switches::kBrowserCrashTest)) {
int* bad_pointer = NULL;
*bad_pointer = 0;
}
#if defined(OS_CHROMEOS)
// Test loading libcros and exit. We return 0 if the library could be loaded,
// and 1 if it can't be. This is for validation that the library is installed
// and versioned properly for Chrome to find.
if (command_line.HasSwitch(switches::kTestLoadLibcros))
exit(!chromeos::CrosLibrary::Get()->libcros_loaded());
#endif
}
void AddFirstRunNewTabs(BrowserInit* browser_init,
const std::vector<GURL>& new_tabs) {
for (std::vector<GURL>::const_iterator it = new_tabs.begin();
it != new_tabs.end(); ++it) {
if (it->is_valid())
browser_init->AddFirstRunTab(*it);
}
}
#if defined(USE_LINUX_BREAKPAD)
void GetLinuxDistroCallback() {
base::GetLinuxDistro(); // Initialize base::linux_distro if needed.
}
#endif // USE_LINUX_BREAKPAD
void InitializeNetworkOptions(const CommandLine& parsed_command_line) {
if (parsed_command_line.HasSwitch(switches::kEnableFileCookies)) {
// Enable cookie storage for file:// URLs. Must do this before the first
// Profile (and therefore the first CookieMonster) is created.
net::CookieMonster::EnableFileScheme();
}
if (parsed_command_line.HasSwitch(switches::kIgnoreCertificateErrors))
net::HttpStreamFactory::set_ignore_certificate_errors(true);
if (parsed_command_line.HasSwitch(switches::kHostRules))
net::HttpStreamFactory::SetHostMappingRules(
parsed_command_line.GetSwitchValueASCII(switches::kHostRules));
if (parsed_command_line.HasSwitch(switches::kEnableIPPooling))
net::SpdySessionPool::enable_ip_pooling(true);
if (parsed_command_line.HasSwitch(switches::kDisableIPPooling))
net::SpdySessionPool::enable_ip_pooling(false);
if (parsed_command_line.HasSwitch(switches::kAllowSpdyProxyPushAcrossOrigins))
net::SpdySession::set_allow_spdy_proxy_push_across_origins(
parsed_command_line.GetSwitchValueASCII(
switches::kAllowSpdyProxyPushAcrossOrigins).data());
if (parsed_command_line.HasSwitch(switches::kMaxSpdySessionsPerDomain)) {
int value;
base::StringToInt(
parsed_command_line.GetSwitchValueASCII(
switches::kMaxSpdySessionsPerDomain),
&value);
net::SpdySessionPool::set_max_sessions_per_domain(value);
}
if (parsed_command_line.HasSwitch(switches::kEnableWebSocketOverSpdy)) {
// Enable WebSocket over SPDY.
net::WebSocketJob::set_websocket_over_spdy_enabled(true);
}
if (parsed_command_line.HasSwitch(switches::kEnableHttpPipelining))
net::HttpStreamFactory::set_http_pipelining_enabled(true);
if (parsed_command_line.HasSwitch(switches::kTestingFixedHttpPort)) {
int value;
base::StringToInt(
parsed_command_line.GetSwitchValueASCII(
switches::kTestingFixedHttpPort),
&value);
net::HttpStreamFactory::set_testing_fixed_http_port(value);
}
if (parsed_command_line.HasSwitch(switches::kTestingFixedHttpsPort)) {
int value;
base::StringToInt(
parsed_command_line.GetSwitchValueASCII(
switches::kTestingFixedHttpsPort),
&value);
net::HttpStreamFactory::set_testing_fixed_https_port(value);
}
}
void InitializeURLRequestThrottlerManager(net::NetLog* net_log) {
net::URLRequestThrottlerManager::GetInstance()->set_enable_thread_checks(
true);
// TODO(joi): Passing the NetLog here is temporary; once I switch the
// URLRequestThrottlerManager to be part of the URLRequestContext it will
// come from there. Doing it this way for now (2011/5/12) to try to fail
// fast in case A/B experiment gives unexpected results.
net::URLRequestThrottlerManager::GetInstance()->set_net_log(net_log);
}
// Returns the new local state object, guaranteed non-NULL.
PrefService* InitializeLocalState(const CommandLine& parsed_command_line,
bool is_first_run) {
FilePath local_state_path;
PathService::Get(chrome::FILE_LOCAL_STATE, &local_state_path);
bool local_state_file_exists = file_util::PathExists(local_state_path);
// Load local state. This includes the application locale so we know which
// locale dll to load.
PrefService* local_state = g_browser_process->local_state();
DCHECK(local_state);
// TODO(brettw,*): this comment about ResourceBundle was here since
// initial commit. This comment seems unrelated, bit-rotten and
// a candidate for removal.
// Initialize ResourceBundle which handles files loaded from external
// sources. This has to be done before uninstall code path and before prefs
// are registered.
local_state->RegisterStringPref(prefs::kApplicationLocale, std::string());
#if defined(OS_CHROMEOS)
local_state->RegisterStringPref(prefs::kOwnerLocale, std::string());
local_state->RegisterStringPref(prefs::kHardwareKeyboardLayout,
std::string());
#endif // defined(OS_CHROMEOS)
#if !defined(OS_CHROMEOS)
local_state->RegisterBooleanPref(prefs::kMetricsReportingEnabled,
GoogleUpdateSettings::GetCollectStatsConsent());
#endif // !defined(OS_CHROMEOS)
if (is_first_run) {
#if defined(OS_WIN)
// During first run we read the google_update registry key to find what
// language the user selected when downloading the installer. This
// becomes our default language in the prefs.
// Other platforms obey the system locale.
std::wstring install_lang;
if (GoogleUpdateSettings::GetLanguage(&install_lang)) {
local_state->SetString(prefs::kApplicationLocale,
WideToASCII(install_lang));
}
#endif // defined(OS_WIN)
}
// If the local state file for the current profile doesn't exist and the
// parent profile command line flag is present, then we should inherit some
// local state from the parent profile.
// Checking that the local state file for the current profile doesn't exist
// is the most robust way to determine whether we need to inherit or not
// since the parent profile command line flag can be present even when the
// current profile is not a new one, and in that case we do not want to
// inherit and reset the user's setting.
if (!local_state_file_exists &&
parsed_command_line.HasSwitch(switches::kParentProfile)) {
FilePath parent_profile =
parsed_command_line.GetSwitchValuePath(switches::kParentProfile);
scoped_ptr<PrefService> parent_local_state(
PrefService::CreatePrefService(parent_profile, NULL, false));
parent_local_state->RegisterStringPref(prefs::kApplicationLocale,
std::string());
// Right now, we only inherit the locale setting from the parent profile.
local_state->SetString(
prefs::kApplicationLocale,
parent_local_state->GetString(prefs::kApplicationLocale));
}
#if defined(OS_CHROMEOS)
if (parsed_command_line.HasSwitch(switches::kLoginManager)) {
std::string owner_locale = local_state->GetString(prefs::kOwnerLocale);
// Ensure that we start with owner's locale.
if (!owner_locale.empty() &&
local_state->GetString(prefs::kApplicationLocale) != owner_locale &&
!local_state->IsManagedPreference(prefs::kApplicationLocale)) {
local_state->SetString(prefs::kApplicationLocale, owner_locale);
}
}
#endif
return local_state;
}
// Initializes the profile, possibly doing some user prompting to pick a
// fallback profile. Returns the newly created profile, or NULL if startup
// should not continue.
Profile* CreateProfile(const content::MainFunctionParams& parameters,
const FilePath& user_data_dir,
const CommandLine& parsed_command_line) {
Profile* profile;
if (ProfileManager::IsMultipleProfilesEnabled() &&
parsed_command_line.HasSwitch(switches::kProfileDirectory)) {
g_browser_process->local_state()->SetString(prefs::kProfileLastUsed,
parsed_command_line.GetSwitchValueASCII(
switches::kProfileDirectory));
// Clear kProfilesLastActive since the user only wants to launch a specific
// profile.
ListPrefUpdate update(g_browser_process->local_state(),
prefs::kProfilesLastActive);
ListValue* profile_list = update.Get();
profile_list->Clear();
}
#if defined(OS_CHROMEOS)
// TODO(ivankr): http://crbug.com/83792
profile = g_browser_process->profile_manager()->GetDefaultProfile(
user_data_dir);
#else
profile = g_browser_process->profile_manager()->GetLastUsedProfile(
user_data_dir);
#endif
if (profile)
return profile;
#if defined(OS_WIN)
#if defined(USE_AURA)
// TODO(beng):
NOTIMPLEMENTED();
#else
// Ideally, we should be able to run w/o access to disk. For now, we
// prompt the user to pick a different user-data-dir and restart chrome
// with the new dir.
// http://code.google.com/p/chromium/issues/detail?id=11510
FilePath new_user_data_dir = UserDataDirDialog::RunUserDataDirDialog(
user_data_dir);
if (!parameters.ui_task && browser_shutdown::delete_resources_on_shutdown) {
// Only delete the resources if we're not running tests. If we're running
// tests the resources need to be reused as many places in the UI cache
// SkBitmaps from the ResourceBundle.
ResourceBundle::CleanupSharedInstance();
}
if (!new_user_data_dir.empty()) {
// Because of the way CommandLine parses, it's sufficient to append a new
// --user-data-dir switch. The last flag of the same name wins.
// TODO(tc): It would be nice to remove the flag we don't want, but that
// sounds risky if we parse differently than CommandLineToArgvW.
CommandLine new_command_line = parameters.command_line;
new_command_line.AppendSwitchPath(switches::kUserDataDir,
new_user_data_dir);
base::LaunchProcess(new_command_line, base::LaunchOptions(), NULL);
}
#endif
#else
// TODO(port): fix this. See comments near the definition of
// user_data_dir. It is better to CHECK-fail here than it is to
// silently exit because of missing code in the above test.
CHECK(profile) << "Cannot get default profile.";
#endif
return NULL;
}
// Load GPU Blacklist, collect preliminary gpu info, and compute preliminary
// gpu feature flags.
void InitializeGpuDataManager(const CommandLine& parsed_command_line) {
content::GpuDataManager::GetInstance();
if (parsed_command_line.HasSwitch(switches::kSkipGpuDataLoading) ||
parsed_command_line.HasSwitch(switches::kIgnoreGpuBlacklist))
return;
const base::StringPiece gpu_blacklist_json(
ResourceBundle::GetSharedInstance().GetRawDataResource(
IDR_GPU_BLACKLIST));
GpuBlacklist* gpu_blacklist = GpuBlacklist::GetInstance();
bool succeed = gpu_blacklist->LoadGpuBlacklist(
gpu_blacklist_json.as_string(), GpuBlacklist::kCurrentOsOnly);
DCHECK(succeed);
gpu_blacklist->UpdateGpuDataManager();
}
#if defined(OS_MACOSX)
OSStatus KeychainCallback(SecKeychainEvent keychain_event,
SecKeychainCallbackInfo* info, void* context) {
return noErr;
}
#endif
void SetSocketReusePolicy(int warmest_socket_trial_group,
const int socket_policy[],
int num_groups) {
const int* result = std::find(socket_policy, socket_policy + num_groups,
warmest_socket_trial_group);
DCHECK_NE(result, socket_policy + num_groups)
<< "Not a valid socket reuse policy group";
net::SetSocketReusePolicy(result - socket_policy);
}
#if defined(USE_LINUX_BREAKPAD)
bool IsCrashReportingEnabled(const PrefService* local_state) {
// Check whether we should initialize the crash reporter. It may be disabled
// through configuration policy or user preference. It must be disabled for
// Guest mode on Chrome OS in Stable channel.
// The kHeadless environment variable overrides the decision, but only if the
// crash service is under control of the user. It is used by QA testing
// infrastructure to switch on generation of crash reports.
#if defined(OS_CHROMEOS)
bool is_guest_session =
CommandLine::ForCurrentProcess()->HasSwitch(switches::kGuestSession);
bool is_stable_channel =
chrome::VersionInfo::GetChannel() == chrome::VersionInfo::CHANNEL_STABLE;
// TODO(pastarmovj): Consider the TrustedGet here.
bool reporting_enabled;
chromeos::CrosSettings::Get()->GetBoolean(chromeos::kStatsReportingPref,
&reporting_enabled);
bool breakpad_enabled =
!(is_guest_session && is_stable_channel) && reporting_enabled;
if (!breakpad_enabled)
breakpad_enabled = getenv(env_vars::kHeadless) != NULL;
#else
const PrefService::Preference* metrics_reporting_enabled =
local_state->FindPreference(prefs::kMetricsReportingEnabled);
CHECK(metrics_reporting_enabled);
bool breakpad_enabled =
local_state->GetBoolean(prefs::kMetricsReportingEnabled);
if (!breakpad_enabled && metrics_reporting_enabled->IsUserModifiable())
breakpad_enabled = getenv(env_vars::kHeadless) != NULL;
#endif // #if defined(OS_CHROMEOS)
return breakpad_enabled;
}
#endif // #if defined(USE_LINUX_BREAKPAD)
// This code is specific to the Windows-only PreReadExperiment field-trial.
void AddPreReadHistogramTime(const char* name, base::TimeDelta time) {
const base::TimeDelta kMin(base::TimeDelta::FromMilliseconds(1));
const base::TimeDelta kMax(base::TimeDelta::FromHours(1));
static const size_t kBuckets(100);
// FactoryTimeGet will always return a pointer to the same histogram object,
// keyed on its name. There's no need for us to store it explicitly anywhere.
base::Histogram* counter = base::Histogram::FactoryTimeGet(
name, kMin, kMax, kBuckets, base::Histogram::kUmaTargetedHistogramFlag);
counter->AddTime(time);
}
bool ProcessSingletonNotificationCallback(const CommandLine& command_line,
const FilePath& current_directory) {
// Drop the request if the browser process is already in shutdown path.
if (!g_browser_process || g_browser_process->IsShuttingDown())
return false;
// TODO(erikwright): Consider removing this - AFAIK it is no longer used.
// Handle the --uninstall-extension startup action. This needs to done here
// in the process that is running with the target profile, otherwise the
// uninstall will fail to unload and remove all components.
if (command_line.HasSwitch(switches::kUninstallExtension)) {
// The uninstall extension switch can't be combined with the profile
// directory switch.
DCHECK(!command_line.HasSwitch(switches::kProfileDirectory));
Profile* profile = ProfileManager::GetLastUsedProfile();
if (!profile) {
// We should never be called before the profile has been created.
NOTREACHED();
return true;
}
ExtensionsStartupUtil ext_startup_util;
ext_startup_util.UninstallExtension(command_line, profile);
return true;
}
BrowserInit::ProcessCommandLineAlreadyRunning(
command_line, current_directory);
return true;
}
} // namespace
namespace chrome_browser {
// This error message is not localized because we failed to load the
// localization data files.
const char kMissingLocaleDataTitle[] = "Missing File Error";
const char kMissingLocaleDataMessage[] =
"Unable to find locale data files. Please reinstall.";
} // namespace chrome_browser
// BrowserMainParts ------------------------------------------------------------
ChromeBrowserMainParts::ChromeBrowserMainParts(
const content::MainFunctionParams& parameters)
: parameters_(parameters),
parsed_command_line_(parameters.command_line),
result_code_(content::RESULT_CODE_NORMAL_EXIT),
startup_watcher_(new StartupTimeBomb()),
shutdown_watcher_(new ShutdownWatcherHelper()),
record_search_engine_(false),
translate_manager_(NULL),
profile_(NULL),
run_message_loop_(true),
notify_result_(ProcessSingleton::PROCESS_NONE),
is_first_run_(false),
first_run_ui_bypass_(false),
local_state_(NULL),
restart_last_session_(false) {
// If we're running tests (ui_task is non-null).
if (parameters.ui_task)
browser_defaults::enable_help_app = false;
}
ChromeBrowserMainParts::~ChromeBrowserMainParts() {
for (int i = static_cast<int>(chrome_extra_parts_.size())-1; i >= 0; --i)
delete chrome_extra_parts_[i];
chrome_extra_parts_.clear();
}
// This will be called after the command-line has been mutated by about:flags
void ChromeBrowserMainParts::SetupMetricsAndFieldTrials() {
// Must initialize metrics after labs have been converted into switches,
// but before field trials are set up (so that client ID is available for
// one-time randomized field trials).
#if defined(OS_WIN)
if (parsed_command_line_.HasSwitch(switches::kChromeFrame))
MetricsLog::set_version_extension("-F");
#elif defined(ARCH_CPU_64_BITS)
MetricsLog::set_version_extension("-64");
#endif // defined(OS_WIN)
// Initialize FieldTrialList to support FieldTrials that use one-time
// randomization. The client ID will be empty if the user has not opted
// to send metrics.
MetricsService* metrics = browser_process_->metrics_service();
if (IsMetricsReportingEnabled())
metrics->ForceClientIdCreation(); // Needed below.
field_trial_list_.reset(new base::FieldTrialList(metrics->GetClientId()));
SetupFieldTrials(metrics->recording_active(),
local_state_->IsManagedPreference(
prefs::kMaxConnectionsPerProxy));
// Initialize FieldTrialSynchronizer system. This is a singleton and is used
// for posting tasks via base::Bind. Its deleted when it goes out of scope.
// Even though base::Bind does AddRef and Release, the object will not be
// deleted after the Task is executed.
field_trial_synchronizer_ = new FieldTrialSynchronizer();
}
// This is an A/B test for the maximum number of persistent connections per
// host. Currently Chrome, Firefox, and IE8 have this value set at 6. Safari
// uses 4, and Fasterfox (a plugin for Firefox that supposedly configures it to
// run faster) uses 8. We would like to see how much of an effect this value has
// on browsing. Too large a value might cause us to run into SYN flood detection
// mechanisms.
void ChromeBrowserMainParts::ConnectionFieldTrial() {
const base::FieldTrial::Probability kConnectDivisor = 100;
const base::FieldTrial::Probability kConnectProbability = 1; // 1% prob.
// After June 30, 2011 builds, it will always be in default group.
scoped_refptr<base::FieldTrial> connect_trial(
new base::FieldTrial(
"ConnCountImpact", kConnectDivisor, "conn_count_6", 2011, 6, 30));
// This (6) is the current default value. Having this group declared here
// makes it straightforward to modify |kConnectProbability| such that the same
// probability value will be assigned to all the other groups, while
// preserving the remainder of the of probability space to the default value.
const int connect_6 = connect_trial->kDefaultGroupNumber;
const int connect_5 = connect_trial->AppendGroup("conn_count_5",
kConnectProbability);
const int connect_7 = connect_trial->AppendGroup("conn_count_7",
kConnectProbability);
const int connect_8 = connect_trial->AppendGroup("conn_count_8",
kConnectProbability);
const int connect_9 = connect_trial->AppendGroup("conn_count_9",
kConnectProbability);
const int connect_trial_group = connect_trial->group();
int max_sockets = 0;
if (connect_trial_group == connect_5) {
max_sockets = 5;
} else if (connect_trial_group == connect_6) {
max_sockets = 6;
} else if (connect_trial_group == connect_7) {
max_sockets = 7;
} else if (connect_trial_group == connect_8) {
max_sockets = 8;
} else if (connect_trial_group == connect_9) {
max_sockets = 9;
} else {
NOTREACHED();
}
net::ClientSocketPoolManager::set_max_sockets_per_group(
net::HttpNetworkSession::NORMAL_SOCKET_POOL, max_sockets);
}
// A/B test for determining a value for unused socket timeout. Currently the
// timeout defaults to 10 seconds. Having this value set too low won't allow us
// to take advantage of idle sockets. Setting it to too high could possibly
// result in more ERR_CONNECTION_RESETs, since some servers will kill a socket
// before we time it out. Since these are "unused" sockets, we won't retry the
// connection and instead show an error to the user. So we need to be
// conservative here. We've seen that some servers will close the socket after
// as short as 10 seconds. See http://crbug.com/84313 for more details.
void ChromeBrowserMainParts::SocketTimeoutFieldTrial() {
const base::FieldTrial::Probability kIdleSocketTimeoutDivisor = 100;
// 1% probability for all experimental settings.
const base::FieldTrial::Probability kSocketTimeoutProbability = 1;
// After June 30, 2011 builds, it will always be in default group.
scoped_refptr<base::FieldTrial> socket_timeout_trial(
new base::FieldTrial("IdleSktToImpact", kIdleSocketTimeoutDivisor,
"idle_timeout_10", 2011, 6, 30));
const int socket_timeout_10 = socket_timeout_trial->kDefaultGroupNumber;
const int socket_timeout_5 =
socket_timeout_trial->AppendGroup("idle_timeout_5",
kSocketTimeoutProbability);
const int socket_timeout_20 =
socket_timeout_trial->AppendGroup("idle_timeout_20",
kSocketTimeoutProbability);
const int idle_to_trial_group = socket_timeout_trial->group();
if (idle_to_trial_group == socket_timeout_5) {
net::ClientSocketPool::set_unused_idle_socket_timeout(
base::TimeDelta::FromSeconds(5));
} else if (idle_to_trial_group == socket_timeout_10) {
net::ClientSocketPool::set_unused_idle_socket_timeout(
base::TimeDelta::FromSeconds(10));
} else if (idle_to_trial_group == socket_timeout_20) {
net::ClientSocketPool::set_unused_idle_socket_timeout(
base::TimeDelta::FromSeconds(20));
} else {
NOTREACHED();
}
}
void ChromeBrowserMainParts::ProxyConnectionsFieldTrial() {
const base::FieldTrial::Probability kProxyConnectionsDivisor = 100;
// 25% probability
const base::FieldTrial::Probability kProxyConnectionProbability = 1;
// After June 30, 2011 builds, it will always be in default group.
scoped_refptr<base::FieldTrial> proxy_connection_trial(
new base::FieldTrial("ProxyConnectionImpact", kProxyConnectionsDivisor,
"proxy_connections_32", 2011, 6, 30));
// This (32 connections per proxy server) is the current default value.
// Declaring it here allows us to easily re-assign the probability space while
// maintaining that the default group always has the remainder of the "share",
// which allows for cleaner and quicker changes down the line if needed.
const int proxy_connections_32 = proxy_connection_trial->kDefaultGroupNumber;
// The number of max sockets per group cannot be greater than the max number
// of sockets per proxy server. We tried using 8, and it can easily
// lead to total browser stalls.
const int proxy_connections_16 =
proxy_connection_trial->AppendGroup("proxy_connections_16",
kProxyConnectionProbability);
const int proxy_connections_64 =
proxy_connection_trial->AppendGroup("proxy_connections_64",
kProxyConnectionProbability);
const int proxy_connections_trial_group = proxy_connection_trial->group();
int max_sockets = 0;
if (proxy_connections_trial_group == proxy_connections_16) {
max_sockets = 16;
} else if (proxy_connections_trial_group == proxy_connections_32) {
max_sockets = 32;
} else if (proxy_connections_trial_group == proxy_connections_64) {
max_sockets = 64;
} else {
NOTREACHED();
}
net::ClientSocketPoolManager::set_max_sockets_per_proxy_server(
net::HttpNetworkSession::NORMAL_SOCKET_POOL, max_sockets);
}
// When --use-spdy not set, users will be in A/B test for spdy.
// group A (npn_with_spdy): this means npn and spdy are enabled. In case server
// supports spdy, browser will use spdy.
// group B (npn_with_http): this means npn is enabled but spdy won't be used.
// Http is still used for all requests.
// default group: no npn or spdy is involved. The "old" non-spdy
// chrome behavior.
void ChromeBrowserMainParts::SpdyFieldTrial() {
if (parsed_command_line().HasSwitch(switches::kUseSpdy)) {
std::string spdy_mode =
parsed_command_line().GetSwitchValueASCII(switches::kUseSpdy);
net::HttpNetworkLayer::EnableSpdy(spdy_mode);
}
if (parsed_command_line().HasSwitch(switches::kEnableSpdy3)) {
net::HttpStreamFactory::EnableNpnSpdy3();
} else if (parsed_command_line().HasSwitch(
switches::kEnableSpdyFlowControl)) {
net::HttpStreamFactory::EnableFlowControl();
} else if (parsed_command_line().HasSwitch(switches::kEnableNpn)) {
net::HttpStreamFactory::EnableNpnSpdy();
} else if (parsed_command_line().HasSwitch(switches::kEnableNpnHttpOnly)) {
net::HttpStreamFactory::EnableNpnHttpOnly();
} else {
#if !defined(OS_CHROMEOS)
bool is_spdy_trial = false;
const base::FieldTrial::Probability kSpdyDivisor = 100;
base::FieldTrial::Probability npnhttp_probability = 5;
base::FieldTrial::Probability flow_control_probability = 5;
base::FieldTrial::Probability spdy3_probability = 0;
// After June 30, 2013 builds, it will always be in default group.
scoped_refptr<base::FieldTrial> trial(
new base::FieldTrial(
"SpdyImpact", kSpdyDivisor, "npn_with_spdy", 2013, 6, 30));
// NPN with spdy support is the default.
int npn_spdy_grp = trial->kDefaultGroupNumber;
// NPN with only http support, no spdy.
int npn_http_grp = trial->AppendGroup("npn_with_http", npnhttp_probability);
// NPN with http/1.1, spdy/2, spdy/2.1 and spdy/3 support.
int spdy3_grp = trial->AppendGroup("spdy3", spdy3_probability);
// NPN with http/1.1, spdy/2 and spdy/2.1 support.
int flow_control_grp = trial->AppendGroup(
"flow_control", flow_control_probability);
int trial_grp = trial->group();
if (trial_grp == npn_spdy_grp) {
is_spdy_trial = true;
net::HttpStreamFactory::EnableNpnSpdy();
} else if (trial_grp == npn_http_grp) {
is_spdy_trial = true;
net::HttpStreamFactory::EnableNpnHttpOnly();
} else if (trial_grp == spdy3_grp) {
is_spdy_trial = true;
net::HttpStreamFactory::EnableNpnSpdy3();
} else if (trial_grp == flow_control_grp) {
is_spdy_trial = true;
net::HttpStreamFactory::EnableFlowControl();
} else {
CHECK(!is_spdy_trial);
}
#else
// Always enable SPDY on Chrome OS
net::HttpStreamFactory::EnableNpnSpdy();
#endif // !defined(OS_CHROMEOS)
}
// Setup SPDY CWND Field trial.
const base::FieldTrial::Probability kSpdyCwndDivisor = 100;
const base::FieldTrial::Probability kSpdyCwnd16 = 20; // fixed at 16
const base::FieldTrial::Probability kSpdyCwnd10 = 20; // fixed at 10
const base::FieldTrial::Probability kSpdyCwndMin16 = 20; // no less than 16
const base::FieldTrial::Probability kSpdyCwndMin10 = 20; // no less than 10
// After June 30, 2013 builds, it will always be in default group
// (cwndDynamic).
scoped_refptr<base::FieldTrial> trial(
new base::FieldTrial(
"SpdyCwnd", kSpdyCwndDivisor, "cwndDynamic", 2013, 6, 30));
trial->AppendGroup("cwnd10", kSpdyCwnd10);
trial->AppendGroup("cwnd16", kSpdyCwnd16);
trial->AppendGroup("cwndMin16", kSpdyCwndMin16);
trial->AppendGroup("cwndMin10", kSpdyCwndMin10);
if (parsed_command_line().HasSwitch(switches::kMaxSpdyConcurrentStreams)) {
int value = 0;
base::StringToInt(parsed_command_line().GetSwitchValueASCII(
switches::kMaxSpdyConcurrentStreams),
&value);
if (value > 0)
net::SpdySession::set_max_concurrent_streams(value);
}
}
// If --socket-reuse-policy is not specified, run an A/B test for choosing the
// warmest socket.
void ChromeBrowserMainParts::WarmConnectionFieldTrial() {
const CommandLine& command_line = parsed_command_line();
if (command_line.HasSwitch(switches::kSocketReusePolicy)) {
std::string socket_reuse_policy_str = command_line.GetSwitchValueASCII(
switches::kSocketReusePolicy);
int policy = -1;
base::StringToInt(socket_reuse_policy_str, &policy);
const int policy_list[] = { 0, 1, 2 };
VLOG(1) << "Setting socket_reuse_policy = " << policy;
SetSocketReusePolicy(policy, policy_list, arraysize(policy_list));
return;
}
const base::FieldTrial::Probability kWarmSocketDivisor = 100;
const base::FieldTrial::Probability kWarmSocketProbability = 33;
// After January 30, 2013 builds, it will always be in default group.
scoped_refptr<base::FieldTrial> warmest_socket_trial(
new base::FieldTrial(
"WarmSocketImpact", kWarmSocketDivisor, "last_accessed_socket",
2013, 1, 30));
// Default value is USE_LAST_ACCESSED_SOCKET.
const int last_accessed_socket = warmest_socket_trial->kDefaultGroupNumber;
const int warmest_socket = warmest_socket_trial->AppendGroup(
"warmest_socket", kWarmSocketProbability);
const int warm_socket = warmest_socket_trial->AppendGroup(
"warm_socket", kWarmSocketProbability);
const int warmest_socket_trial_group = warmest_socket_trial->group();
const int policy_list[] = { warmest_socket, warm_socket,
last_accessed_socket };
SetSocketReusePolicy(warmest_socket_trial_group, policy_list,
arraysize(policy_list));
}
// If neither --enable-connect-backup-jobs or --disable-connect-backup-jobs is
// specified, run an A/B test for automatically establishing backup TCP
// connections when a certain timeout value is exceeded.
void ChromeBrowserMainParts::ConnectBackupJobsFieldTrial() {
if (parsed_command_line().HasSwitch(switches::kEnableConnectBackupJobs)) {
net::internal::ClientSocketPoolBaseHelper::set_connect_backup_jobs_enabled(
true);
} else if (parsed_command_line().HasSwitch(
switches::kDisableConnectBackupJobs)) {
net::internal::ClientSocketPoolBaseHelper::set_connect_backup_jobs_enabled(
false);
} else {
const base::FieldTrial::Probability kConnectBackupJobsDivisor = 100;
// 1% probability.
const base::FieldTrial::Probability kConnectBackupJobsProbability = 1;
// After June 30, 2011 builds, it will always be in default group.
scoped_refptr<base::FieldTrial> trial(
new base::FieldTrial("ConnnectBackupJobs",
kConnectBackupJobsDivisor, "ConnectBackupJobsEnabled", 2011, 6,
30));
const int connect_backup_jobs_enabled = trial->kDefaultGroupNumber;
trial->AppendGroup("ConnectBackupJobsDisabled",
kConnectBackupJobsProbability);
const int trial_group = trial->group();
net::internal::ClientSocketPoolBaseHelper::set_connect_backup_jobs_enabled(
trial_group == connect_backup_jobs_enabled);
}
}
void ChromeBrowserMainParts::PredictorFieldTrial() {
const base::FieldTrial::Probability kDivisor = 1000;
// For each option (i.e., non-default), we have a fixed probability.
// 0.1% probability.
const base::FieldTrial::Probability kProbabilityPerGroup = 1;
// After June 30, 2011 builds, it will always be in default group
// (default_enabled_prefetch).
scoped_refptr<base::FieldTrial> trial(
new base::FieldTrial("DnsImpact", kDivisor,
"default_enabled_prefetch", 2011, 10, 30));
// First option is to disable prefetching completely.
int disabled_prefetch = trial->AppendGroup("disabled_prefetch",
kProbabilityPerGroup);
// We're running two experiments at the same time. The first set of trials
// modulates the delay-time until we declare a congestion event (and purge
// our queue). The second modulates the number of concurrent resolutions
// we do at any time. Users are in exactly one trial (or the default) during
// any one run, and hence only one experiment at a time.
// Experiment 1:
// Set congestion detection at 250, 500, or 750ms, rather than the 1 second
// default.
int max_250ms_prefetch = trial->AppendGroup("max_250ms_queue_prefetch",
kProbabilityPerGroup);
int max_500ms_prefetch = trial->AppendGroup("max_500ms_queue_prefetch",
kProbabilityPerGroup);
int max_750ms_prefetch = trial->AppendGroup("max_750ms_queue_prefetch",
kProbabilityPerGroup);
// Set congestion detection at 2 seconds instead of the 1 second default.
int max_2s_prefetch = trial->AppendGroup("max_2s_queue_prefetch",
kProbabilityPerGroup);
// Experiment 2:
// Set max simultaneous resoultions to 2, 4, or 6, and scale the congestion
// limit proportionally (so we don't impact average probability of asserting
// congesion very much).
int max_2_concurrent_prefetch = trial->AppendGroup(
"max_2 concurrent_prefetch", kProbabilityPerGroup);
int max_4_concurrent_prefetch = trial->AppendGroup(
"max_4 concurrent_prefetch", kProbabilityPerGroup);
int max_6_concurrent_prefetch = trial->AppendGroup(
"max_6 concurrent_prefetch", kProbabilityPerGroup);
if (trial->group() != disabled_prefetch) {
// Initialize the DNS prefetch system.
size_t max_parallel_resolves =
chrome_browser_net::Predictor::kMaxSpeculativeParallelResolves;
int max_queueing_delay_ms =
chrome_browser_net::Predictor::kMaxSpeculativeResolveQueueDelayMs;
if (trial->group() == max_2_concurrent_prefetch)
max_parallel_resolves = 2;
else if (trial->group() == max_4_concurrent_prefetch)
max_parallel_resolves = 4;
else if (trial->group() == max_6_concurrent_prefetch)
max_parallel_resolves = 6;
chrome_browser_net::Predictor::set_max_parallel_resolves(
max_parallel_resolves);
if (trial->group() == max_250ms_prefetch) {
max_queueing_delay_ms =
(250 * chrome_browser_net::Predictor::kTypicalSpeculativeGroupSize) /
max_parallel_resolves;
} else if (trial->group() == max_500ms_prefetch) {
max_queueing_delay_ms =
(500 * chrome_browser_net::Predictor::kTypicalSpeculativeGroupSize) /
max_parallel_resolves;
} else if (trial->group() == max_750ms_prefetch) {
max_queueing_delay_ms =
(750 * chrome_browser_net::Predictor::kTypicalSpeculativeGroupSize) /
max_parallel_resolves;
} else if (trial->group() == max_2s_prefetch) {
max_queueing_delay_ms =
(2000 * chrome_browser_net::Predictor::kTypicalSpeculativeGroupSize) /
max_parallel_resolves;
}
chrome_browser_net::Predictor::set_max_queueing_delay(
max_queueing_delay_ms);
}
}
void ChromeBrowserMainParts::DefaultAppsFieldTrial() {
std::string brand;
google_util::GetBrand(&brand);
// Create a 100% field trial based on the brand code.
if (LowerCaseEqualsASCII(brand, "ecdb")) {
base::FieldTrialList::CreateFieldTrial(kDefaultAppsTrialName,
kDefaultAppsTrialNoAppsGroup);
} else if (LowerCaseEqualsASCII(brand, "ecda")) {
base::FieldTrialList::CreateFieldTrial(kDefaultAppsTrialName,
kDefaultAppsTrialWithAppsGroup);
}
}
void ChromeBrowserMainParts::AutoLaunchChromeFieldTrial() {
std::string brand;
google_util::GetBrand(&brand);
// Create a 100% field trial based on the brand code.
if (auto_launch_trial::IsInExperimentGroup(brand)) {
base::FieldTrialList::CreateFieldTrial(kAutoLaunchTrialName,
kAutoLaunchTrialAutoLaunchGroup);
} else if (auto_launch_trial::IsInControlGroup(brand)) {
base::FieldTrialList::CreateFieldTrial(kAutoLaunchTrialName,
kAutoLaunchTrialControlGroup);
}
}
void ChromeBrowserMainParts::ComodoDNSExperimentFieldTrial() {
// 100% probability of being in the experiment group until the timeout.
const base::FieldTrial::Probability kDivisor = 1;
const base::FieldTrial::Probability kProbability = 1;
// After April 15, 2012 builds, it will always be in default group.
scoped_refptr<base::FieldTrial> trial(
new base::FieldTrial("ComodoDNSExperiment", kDivisor,
"inactive", 2012, 4, 15));
const int active = trial->AppendGroup("active", kProbability);
if (trial->group() == active)
ChromeNetworkDelegate::EnableComodoDNSExperiment();
}
// ChromeBrowserMainParts: |SetupMetricsAndFieldTrials()| related --------------
void ChromeBrowserMainParts::SetupFieldTrials(bool metrics_recording_enabled,
bool proxy_policy_is_set) {
// Note: make sure to call ConnectionFieldTrial() before
// ProxyConnectionsFieldTrial().
ConnectionFieldTrial();
SocketTimeoutFieldTrial();
// If a policy is defining the number of active connections this field test
// shoud not be performed.
if (!proxy_policy_is_set)
ProxyConnectionsFieldTrial();
prerender::ConfigurePrefetchAndPrerender(parsed_command_line());
InstantFieldTrial::Activate();
SpdyFieldTrial();
ConnectBackupJobsFieldTrial();
WarmConnectionFieldTrial();
PredictorFieldTrial();
DefaultAppsFieldTrial();
AutoLaunchChromeFieldTrial();
ComodoDNSExperimentFieldTrial();
AutocompleteFieldTrial::Activate();
NewTabUI::SetupFieldTrials();
}
void ChromeBrowserMainParts::StartMetricsRecording() {
MetricsService* metrics = g_browser_process->metrics_service();
if (parsed_command_line_.HasSwitch(switches::kMetricsRecordingOnly) ||
parsed_command_line_.HasSwitch(switches::kEnableBenchmarking)) {
// If we're testing then we don't care what the user preference is, we turn
// on recording, but not reporting, otherwise tests fail.
metrics->StartRecordingOnly();
return;
}
if (IsMetricsReportingEnabled())
metrics->Start();
}
bool ChromeBrowserMainParts::IsMetricsReportingEnabled() {
// If the user permits metrics reporting with the checkbox in the
// prefs, we turn on recording. We disable metrics completely for
// non-official builds.
bool enabled = false;
#if defined(GOOGLE_CHROME_BUILD)
#if defined(OS_CHROMEOS)
chromeos::CrosSettings::Get()->GetBoolean(chromeos::kStatsReportingPref,
&enabled);
#else
enabled = local_state_->GetBoolean(prefs::kMetricsReportingEnabled);
#endif // #if defined(OS_CHROMEOS)
#endif // defined(GOOGLE_CHROME_BUILD)
return enabled;
}
// -----------------------------------------------------------------------------
// TODO(viettrungluu): move more/rest of BrowserMain() into BrowserMainParts.
#if defined(OS_WIN)
#define DLLEXPORT __declspec(dllexport)
// We use extern C for the prototype DLLEXPORT to avoid C++ name mangling.
extern "C" {
DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded();
}
DLLEXPORT void __cdecl RelaunchChromeBrowserWithNewCommandLineIfNeeded() {
// Need an instance of AtExitManager to handle singleton creations and
// deletions. We need this new instance because, the old instance created
// in ChromeMain() got destructed when the function returned.
base::AtExitManager exit_manager;
upgrade_util::RelaunchChromeBrowserWithNewCommandLineIfNeeded();
}
#endif
// content::BrowserMainParts implementation ------------------------------------
void ChromeBrowserMainParts::PreEarlyInitialization() {
for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
chrome_extra_parts_[i]->PreEarlyInitialization();
}
void ChromeBrowserMainParts::PostEarlyInitialization() {
for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
chrome_extra_parts_[i]->PostEarlyInitialization();
}
void ChromeBrowserMainParts::ToolkitInitialized() {
for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
chrome_extra_parts_[i]->ToolkitInitialized();
}
void ChromeBrowserMainParts::PreMainMessageLoopStart() {
for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
chrome_extra_parts_[i]->PreMainMessageLoopStart();
}
MessageLoop* ChromeBrowserMainParts::GetMainMessageLoop() {
return NULL;
}
void ChromeBrowserMainParts::PostMainMessageLoopStart() {
for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
chrome_extra_parts_[i]->PostMainMessageLoopStart();
}
int ChromeBrowserMainParts::PreCreateThreads() {
result_code_ = PreCreateThreadsImpl();
// These members must be initialized before returning from this function.
DCHECK(master_prefs_.get());
DCHECK(browser_init_.get());
return result_code_;
}
int ChromeBrowserMainParts::PreCreateThreadsImpl() {
run_message_loop_ = false;
#if defined(OS_WIN)
PathService::Get(chrome::DIR_USER_DATA, &user_data_dir_);
#else
// Getting the user data dir can fail if the directory isn't
// creatable, for example; on Windows in code below we bring up a
// dialog prompting the user to pick a different directory.
// However, ProcessSingleton needs a real user_data_dir on Mac/Linux,
// so it's better to fail here than fail mysteriously elsewhere.
CHECK(PathService::Get(chrome::DIR_USER_DATA, &user_data_dir_))
<< "Must be able to get user data directory!";
#endif
process_singleton_.reset(new ProcessSingleton(user_data_dir_));
// Ensure ProcessSingleton won't process messages too early. It will be
// unlocked in PostBrowserStart().
process_singleton_->Lock(NULL);
is_first_run_ =
(first_run::IsChromeFirstRun() ||
parsed_command_line().HasSwitch(switches::kFirstRun)) &&
!parsed_command_line().HasSwitch(switches::kImport) &&
!parsed_command_line().HasSwitch(switches::kImportFromFile);
browser_process_.reset(new BrowserProcessImpl(parsed_command_line()));
if (parsed_command_line().HasSwitch(switches::kEnableProfiling)) {
// User wants to override default tracking status.
std::string flag =
parsed_command_line().GetSwitchValueASCII(switches::kEnableProfiling);
// Default to basic profiling (no parent child support).
tracked_objects::ThreadData::Status status =
tracked_objects::ThreadData::PROFILING_ACTIVE;
if (flag.compare("0") != 0)
status = tracked_objects::ThreadData::DEACTIVATED;
else if (flag.compare("child") != 0)
status = tracked_objects::ThreadData::PROFILING_CHILDREN_ACTIVE;
tracked_objects::ThreadData::InitializeAndSetTrackingStatus(status);
}
if (parsed_command_line().HasSwitch(switches::kProfilingOutputFile)) {
tracking_objects_.set_output_file_path(
parsed_command_line().GetSwitchValuePath(
switches::kProfilingOutputFile));
}
// This forces the TabCloseableStateWatcher to be created and, on chromeos,
// register for the notifications it needs to track the closeable state of
// tabs.
browser_process_->tab_closeable_state_watcher();
local_state_ = InitializeLocalState(parsed_command_line(),
is_first_run_);
// These members must be initialized before returning from this function.
master_prefs_.reset(new first_run::MasterPrefs);
browser_init_.reset(new BrowserInit);
// If we're running tests (ui_task is non-null), then the ResourceBundle
// has already been initialized.
if (parameters().ui_task) {
browser_process_->SetApplicationLocale("en-US");
} else {
// Mac starts it earlier in |PreMainMessageLoopStart()| (because it is
// needed when loading the MainMenu.nib and the language doesn't depend on
// anything since it comes from Cocoa.
#if defined(OS_MACOSX)
browser_process_->SetApplicationLocale(l10n_util::GetLocaleOverride());
#else
const std::string locale =
local_state_->GetString(prefs::kApplicationLocale);
// On a POSIX OS other than ChromeOS, the parameter that is passed to the
// method InitSharedInstance is ignored.
const std::string loaded_locale =
ResourceBundle::InitSharedInstanceWithLocale(locale);
if (loaded_locale.empty() &&
!parsed_command_line().HasSwitch(switches::kNoErrorDialogs)) {
ShowMissingLocaleMessageBox();
return chrome::RESULT_CODE_MISSING_DATA;
}
CHECK(!loaded_locale.empty()) << "Locale could not be found for " << locale;
browser_process_->SetApplicationLocale(loaded_locale);
FilePath resources_pack_path;
PathService::Get(chrome::FILE_RESOURCES_PACK, &resources_pack_path);
ResourceBundle::AddDataPackToSharedInstance(resources_pack_path);
#endif // defined(OS_MACOSX)
}
#if defined(TOOLKIT_GTK)
g_set_application_name(l10n_util::GetStringUTF8(IDS_PRODUCT_NAME).c_str());
#endif
std::string try_chrome =
parsed_command_line().GetSwitchValueASCII(switches::kTryChromeAgain);
if (!try_chrome.empty()) {
#if defined(OS_WIN) && !defined(USE_AURA)
// Setup.exe has determined that we need to run a retention experiment
// and has lauched chrome to show the experiment UI.
if (process_singleton_->FoundOtherProcessWindow()) {
// It seems that we don't need to run the experiment since chrome
// in the same profile is already running.
VLOG(1) << "Retention experiment not required";
return TryChromeDialogView::NOT_NOW;
}
int try_chrome_int;
base::StringToInt(try_chrome, &try_chrome_int);
TryChromeDialogView::Result answer =
TryChromeDialogView::Show(try_chrome_int, process_singleton_.get());
if (answer == TryChromeDialogView::NOT_NOW)
return chrome::RESULT_CODE_NORMAL_EXIT_CANCEL;
if (answer == TryChromeDialogView::UNINSTALL_CHROME)
return chrome::RESULT_CODE_NORMAL_EXIT_EXP2;
#else
// We don't support retention experiments on Mac or Linux.
return content::RESULT_CODE_NORMAL_EXIT;
#endif // defined(OS_WIN)
}
// On first run, we need to process the predictor preferences before the
// browser's profile_manager object is created, but after ResourceBundle
// is initialized.
first_run_ui_bypass_ = false; // True to skip first run UI.
if (is_first_run_) {
first_run_ui_bypass_ = !first_run::ProcessMasterPreferences(
user_data_dir_, master_prefs_.get());
AddFirstRunNewTabs(browser_init_.get(), master_prefs_->new_tabs);
// If we are running in App mode, we do not want to show the importer
// (first run) UI.
if (!first_run_ui_bypass_ &&
(parsed_command_line().HasSwitch(switches::kApp) ||
parsed_command_line().HasSwitch(switches::kAppId) ||
parsed_command_line().HasSwitch(switches::kNoFirstRun)))
first_run_ui_bypass_ = true;
// Create Sentinel if no-first-run argument is passed in.
if (parsed_command_line().HasSwitch(switches::kNoFirstRun))
first_run::CreateSentinel();
}
// TODO(viettrungluu): why don't we run this earlier?
if (!parsed_command_line().HasSwitch(switches::kNoErrorDialogs))
WarnAboutMinimumSystemRequirements();
#if !defined(OS_ANDROID)
// Convert active labs into switches. Modifies the current command line. Not
// needed on Android as there aren't experimental flags.
about_flags::ConvertFlagsToSwitches(local_state_,
CommandLine::ForCurrentProcess());
#endif
local_state_->UpdateCommandLinePrefStore(CommandLine::ForCurrentProcess());
// Reset the command line in the crash report details, since we may have
// just changed it to include experiments.
child_process_logging::SetCommandLine(CommandLine::ForCurrentProcess());
#if defined(OS_LINUX) || defined(OS_OPENBSD) || defined(OS_MACOSX)
// Set the product channel for crash reports.
child_process_logging::SetChannel(
chrome::VersionInfo::GetVersionStringModifier());
#endif
InitializeNetworkOptions(parsed_command_line());
InitializeURLRequestThrottlerManager(browser_process_->net_log());
// Initialize histogram synchronizer system. This is a singleton and is used
// for posting tasks via base::Bind. Its deleted when it goes out of scope.
// Even though base::Bind does AddRef and Release, the object will not
// be deleted after the Task is executed.
histogram_synchronizer_ = new HistogramSynchronizer();
tracking_synchronizer_ = new chrome_browser_metrics::TrackingSynchronizer();
// Now that all preferences have been registered, set the install date
// for the uninstall metrics if this is our first run. This only actually
// gets used if the user has metrics reporting enabled at uninstall time.
int64 install_date =
local_state_->GetInt64(prefs::kUninstallMetricsInstallDate);
if (install_date == 0) {
local_state_->SetInt64(prefs::kUninstallMetricsInstallDate,
base::Time::Now().ToTimeT());
}
#if defined(OS_MACOSX)
// Get the Keychain API to register for distributed notifications on the main
// thread, which has a proper CFRunloop, instead of later on the I/O thread,
// which doesn't. This ensures those notifications will get delivered
// properly. See issue 37766.
// (Note that the callback mask here is empty. I don't want to register for
// any callbacks, I just want to initialize the mechanism.)
SecKeychainAddCallback(&KeychainCallback, 0, NULL);
#endif
// Now the command line has been mutated based on about:flags, we can setup
// metrics and initialize field trials. The field trials are needed by
// IOThread's initialization which happens in BrowserProcess:PreCreateThreads.
SetupMetricsAndFieldTrials();
// ChromeOS needs ResourceBundle::InitSharedInstance to be called before this.
browser_process_->PreCreateThreads();
return content::RESULT_CODE_NORMAL_EXIT;
}
void ChromeBrowserMainParts::PreMainMessageLoopRun() {
result_code_ = PreMainMessageLoopRunImpl();
for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
chrome_extra_parts_[i]->PreMainMessageLoopRun();
}
// PreMainMessageLoopRun calls these extra stages in the following order:
// PreMainMessageLoopRunImpl()
// ... initial setup, including browser_process_ setup.
// PreProfileInit()
// ... additional setup, including CreateProfile()
// PostProfileInit()
// ... additional setup
// PreBrowserStart()
// ... browser_init_->Start (OR parameters().ui_task->Run())
// PostBrowserStart()
void ChromeBrowserMainParts::PreProfileInit() {
for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
chrome_extra_parts_[i]->PreProfileInit();
}
void ChromeBrowserMainParts::PostProfileInit() {
for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
chrome_extra_parts_[i]->PostProfileInit();
}
void ChromeBrowserMainParts::PreBrowserStart() {
for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
chrome_extra_parts_[i]->PreBrowserStart();
}
void ChromeBrowserMainParts::PostBrowserStart() {
for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
chrome_extra_parts_[i]->PostBrowserStart();
// Allow ProcessSingleton to process messages.
process_singleton_->Unlock();
}
int ChromeBrowserMainParts::PreMainMessageLoopRunImpl() {
// Now that the file thread has been started, start recording.
StartMetricsRecording();
#if defined(USE_LINUX_BREAKPAD)
// Needs to be called after we have chrome::DIR_USER_DATA and
// g_browser_process. This happens in PreCreateThreads.
BrowserThread::PostTask(BrowserThread::FILE,
FROM_HERE,
base::Bind(&GetLinuxDistroCallback));
if (IsCrashReportingEnabled(local_state_))
InitCrashReporter();
#endif
// Create watchdog thread after creating all other threads because it will
// watch the other threads and they must be running.
browser_process_->watchdog_thread();
// Do any initializating in the browser process that requires all threads
// running.
browser_process_->PreMainMessageLoopRun();
// Record last shutdown time into a histogram.
browser_shutdown::ReadLastShutdownInfo();
#if defined(OS_WIN)
// On Windows, we use our startup as an opportunity to do upgrade/uninstall
// tasks. Those care whether the browser is already running. On Linux/Mac,
// upgrade/uninstall happen separately.
bool already_running = browser_util::IsBrowserAlreadyRunning();
// If the command line specifies 'uninstall' then we need to work here
// unless we detect another chrome browser running.
if (parsed_command_line().HasSwitch(switches::kUninstall)) {
return DoUninstallTasks(already_running);
}
if (parsed_command_line().HasSwitch(switches::kHideIcons) ||
parsed_command_line().HasSwitch(switches::kShowIcons)) {
return ChromeBrowserMainPartsWin::HandleIconsCommands(
parsed_command_line_);
}
#endif
if (parsed_command_line().HasSwitch(switches::kMakeDefaultBrowser)) {
return ShellIntegration::SetAsDefaultBrowser() ?
static_cast<int>(content::RESULT_CODE_NORMAL_EXIT) :
static_cast<int>(chrome::RESULT_CODE_SHELL_INTEGRATION_FAILED);
}
// If the command line specifies --pack-extension, attempt the pack extension
// startup action and exit.
if (parsed_command_line().HasSwitch(switches::kPackExtension)) {
ExtensionsStartupUtil extension_startup_util;
if (extension_startup_util.PackExtension(parsed_command_line()))
return content::RESULT_CODE_NORMAL_EXIT;
return chrome::RESULT_CODE_PACK_EXTENSION_ERROR;
}
#if !defined(OS_MACOSX)
// In environments other than Mac OS X we support import of settings
// from other browsers. In case this process is a short-lived "import"
// process that another browser runs just to import the settings, we
// don't want to be checking for another browser process, by design.
if (!(parsed_command_line().HasSwitch(switches::kImport) ||
parsed_command_line().HasSwitch(switches::kImportFromFile))) {
#endif
// When another process is running, use that process instead of starting a
// new one. NotifyOtherProcess will currently give the other process up to
// 20 seconds to respond. Note that this needs to be done before we attempt
// to read the profile.
notify_result_ = process_singleton_->NotifyOtherProcessOrCreate(
base::Bind(&ProcessSingletonNotificationCallback));
switch (notify_result_) {
case ProcessSingleton::PROCESS_NONE:
// No process already running, fall through to starting a new one.
break;
case ProcessSingleton::PROCESS_NOTIFIED:
#if defined(OS_POSIX) && !defined(OS_MACOSX)
printf("%s\n", base::SysWideToNativeMB(UTF16ToWide(
l10n_util::GetStringUTF16(IDS_USED_EXISTING_BROWSER))).c_str());
#endif
return content::RESULT_CODE_NORMAL_EXIT;
case ProcessSingleton::PROFILE_IN_USE:
return chrome::RESULT_CODE_PROFILE_IN_USE;
case ProcessSingleton::LOCK_ERROR:
LOG(ERROR) << "Failed to create a ProcessSingleton for your profile "
"directory. This means that running multiple instances "
"would start multiple browser processes rather than "
"opening a new window in the existing process. Aborting "
"now to avoid profile corruption.";
return chrome::RESULT_CODE_PROFILE_IN_USE;
default:
NOTREACHED();
}
#if !defined(OS_MACOSX) // closing brace for if
}
#endif
#if defined(USE_X11)
SetBrowserX11ErrorHandlers();
#endif
// Desktop construction occurs here, (required before profile creation).
PreProfileInit();
// Profile creation ----------------------------------------------------------
if (is_first_run_) {
// Warn the ProfileManager that an import process will run, possibly
// locking the WebDataService directory of the next Profile created.
browser_process_->profile_manager()->SetWillImport();
}
profile_ = CreateProfile(parameters(), user_data_dir_, parsed_command_line());
if (!profile_)
return content::RESULT_CODE_NORMAL_EXIT;
// Autoload any profiles which are running background apps.
// TODO(rlp): Do this on a separate thread. See http://crbug.com/99075.
browser_process_->profile_manager()->AutoloadProfiles();
// Post-profile init ---------------------------------------------------------
#if !defined(OS_MACOSX)
// Importing other browser settings is done in a browser-like process
// that exits when this task has finished.
// TODO(port): Port the Mac's IPC-based implementation to other platforms to
// replace this implementation. http://crbug.com/22142
if (parsed_command_line().HasSwitch(switches::kImport) ||
parsed_command_line().HasSwitch(switches::kImportFromFile)) {
return first_run::ImportNow(profile_, parsed_command_line());
}
#endif
#if defined(OS_WIN)
// Do the tasks if chrome has been upgraded while it was last running.
if (!already_running && upgrade_util::DoUpgradeTasks(parsed_command_line()))
return content::RESULT_CODE_NORMAL_EXIT;
// Check if there is any machine level Chrome installed on the current
// machine. If yes and the current Chrome process is user level, we do not
// allow the user level Chrome to run. So we notify the user and uninstall
// user level Chrome.
// Note this check should only happen here, after all the checks above
// (uninstall, resource bundle initialization, other chrome browser
// processes etc).
// Do not allow this to occur for Chrome Frame user-to-system handoffs.
if (!parsed_command_line().HasSwitch(switches::kChromeFrame) &&
ChromeBrowserMainPartsWin::CheckMachineLevelInstall()) {
return chrome::RESULT_CODE_MACHINE_LEVEL_INSTALL_EXISTS;
}
#endif
// Create the TranslateManager singleton.
translate_manager_ = TranslateManager::GetInstance();
DCHECK(translate_manager_ != NULL);
// TODO(stevenjb): Move WIN and MACOSX specific code to apprpriate Parts.
// (requires supporting early exit).
PostProfileInit();
// Show the First Run UI if this is the first time Chrome has been run on
// this computer, or we're being compelled to do so by a command line flag.
// Note that this be done _after_ the PrefService is initialized and all
// preferences are registered, since some of the code that the importer
// touches reads preferences.
if (is_first_run_) {
if (!first_run_ui_bypass_) {
first_run::AutoImport(profile_,
master_prefs_->homepage_defined,
master_prefs_->do_import_items,
master_prefs_->dont_import_items,
master_prefs_->make_chrome_default,
process_singleton_.get());
#if defined(OS_POSIX) && !defined(OS_CHROMEOS)
// On Windows, the download is tagged with enable/disable stats so there
// is no need for this code.
// If stats reporting was turned on by the first run dialog then toggle
// the pref.
if (GoogleUpdateSettings::GetCollectStatsConsent())
local_state_->SetBoolean(prefs::kMetricsReportingEnabled, true);
#endif // OS_POSIX && !OS_CHROMEOS
} // if (!first_run_ui_bypass_)
Browser::SetNewHomePagePrefs(profile_->GetPrefs());
browser_process_->profile_manager()->OnImportFinished(profile_);
} // if (is_first_run_)
#if defined(OS_WIN)
// Sets things up so that if we crash from this point on, a dialog will
// popup asking the user to restart chrome. It is done this late to avoid
// testing against a bunch of special cases that are taken care early on.
ChromeBrowserMainPartsWin::PrepareRestartOnCrashEnviroment(
parsed_command_line());
// Registers Chrome with the Windows Restart Manager, which will restore the
// Chrome session when the computer is restarted after a system update.
// This could be run as late as WM_QUERYENDSESSION for system update reboots,
// but should run on startup if extended to handle crashes/hangs/patches.
// Also, better to run once here than once for each HWND's WM_QUERYENDSESSION.
if (base::win::GetVersion() >= base::win::VERSION_VISTA) {
ChromeBrowserMainPartsWin::RegisterApplicationRestart(
parsed_command_line());
}
#endif // OS_WIN
#if defined(ENABLE_RLZ)
// Init the RLZ library. This just binds the dll and schedules a task on the
// file thread to be run sometime later. If this is the first run we record
// the installation event.
bool google_search_default = false;
TemplateURLService* template_url_service =
TemplateURLServiceFactory::GetForProfile(profile_);
if (template_url_service) {
const TemplateURL* url_template =
template_url_service->GetDefaultSearchProvider();
google_search_default =
url_template && url_template->url_ref().HasGoogleBaseURLs();
}
PrefService* pref_service = profile_->GetPrefs();
bool google_search_homepage = pref_service &&
google_util::IsGoogleHomePageUrl(
pref_service->GetString(prefs::kHomePage));
RLZTracker::InitRlzDelayed(is_first_run_, master_prefs_->ping_delay,
google_search_default, google_search_homepage);
// Prime the RLZ cache for the home page access point so that its avaiable
// for the startup page if needed (i.e., when the startup page is set to
// the home page).
RLZTracker::GetAccessPointRlz(rlz_lib::CHROME_HOME_PAGE, NULL);
#endif // defined(ENABLE_RLZ)
// Configure modules that need access to resources.
net::NetModule::SetResourceProvider(chrome_common_net::NetResourceProvider);
// In unittest mode, this will do nothing. In normal mode, this will create
// the global GoogleURLTracker and IntranetRedirectDetector instances, which
// will promptly go to sleep for five and seven seconds, respectively (to
// avoid slowing startup), and wake up afterwards to see if they should do
// anything else.
//
// A simpler way of doing all this would be to have some function which could
// give the time elapsed since startup, and simply have these objects check
// that when asked to initialize themselves, but this doesn't seem to exist.
//
// These can't be created in the BrowserProcessImpl constructor because they
// need to read prefs that get set after that runs.
browser_process_->google_url_tracker();
browser_process_->intranet_redirect_detector();
GoogleSearchCounter::RegisterForNotifications();
// Disable SDCH filtering if switches::kEnableSdch is 0.
int sdch_enabled = 1;
if (parsed_command_line().HasSwitch(switches::kEnableSdch)) {
base::StringToInt(parsed_command_line().GetSwitchValueASCII(
switches::kEnableSdch), &sdch_enabled);
if (!sdch_enabled)
net::SdchManager::EnableSdchSupport(false);
}
if (sdch_enabled) {
// Perform A/B test to measure global impact of SDCH support.
// Set up a field trial to see what disabling SDCH does to latency of page
// layout globally.
base::FieldTrial::Probability kSDCH_DIVISOR = 1000;
base::FieldTrial::Probability kSDCH_DISABLE_PROBABILITY = 1; // 0.1% prob.
// After March 31, 2012 builds, it will always be in default group.
scoped_refptr<base::FieldTrial> sdch_trial(
new base::FieldTrial("GlobalSdch", kSDCH_DIVISOR, "global_enable_sdch",
2012, 3, 31));
int sdch_enabled_group = sdch_trial->kDefaultGroupNumber;
sdch_trial->AppendGroup("global_disable_sdch",
kSDCH_DISABLE_PROBABILITY);
if (sdch_enabled_group != sdch_trial->group())
net::SdchManager::EnableSdchSupport(false);
}
if (parsed_command_line().HasSwitch(switches::kEnableWatchdog))
InstallJankometer(parsed_command_line());
#if defined(OS_WIN) && !defined(GOOGLE_CHROME_BUILD)
if (parsed_command_line().HasSwitch(switches::kDebugPrint)) {
FilePath path =
parsed_command_line().GetSwitchValuePath(switches::kDebugPrint);
printing::PrintedDocument::set_debug_dump_path(path);
}
#endif
HandleTestParameters(parsed_command_line());
RecordBreakpadStatusUMA(browser_process_->metrics_service());
#if !defined(OS_ANDROID)
about_flags::RecordUMAStatistics(local_state_);
#endif
LanguageUsageMetrics::RecordAcceptLanguages(
profile_->GetPrefs()->GetString(prefs::kAcceptLanguages));
LanguageUsageMetrics::RecordApplicationLanguage(
browser_process_->GetApplicationLocale());
// The extension service may be available at this point. If the command line
// specifies --uninstall-extension, attempt the uninstall extension startup
// action.
if (parsed_command_line().HasSwitch(switches::kUninstallExtension)) {
ExtensionsStartupUtil ext_startup_util;
if (ext_startup_util.UninstallExtension(parsed_command_line(), profile_))
return content::RESULT_CODE_NORMAL_EXIT;
return chrome::RESULT_CODE_UNINSTALL_EXTENSION_ERROR;
}
// Start watching for hangs during startup. We disarm this hang detector when
// ThreadWatcher takes over or when browser is shutdown or when
// startup_watcher_ is deleted.
startup_watcher_->Arm(base::TimeDelta::FromSeconds(300));
// Start watching for a hang.
MetricsService::LogNeedForCleanShutdown();
#if defined(OS_WIN)
// We check this here because if the profile is OTR (chromeos possibility)
// it won't still be accessible after browser is destroyed.
record_search_engine_ = is_first_run_ && !profile_->IsOffTheRecord();
#endif
// Create the instance of the cloud print proxy service so that it can launch
// the service process if needed. This is needed because the service process
// might have shutdown because an update was available.
// TODO(torne): this should maybe be done with
// ProfileKeyedServiceFactory::ServiceIsCreatedWithProfile() instead?
#if !defined(OS_ANDROID)
CloudPrintProxyServiceFactory::GetForProfile(profile_);
#endif
// Load GPU Blacklist.
InitializeGpuDataManager(parsed_command_line());
// Start watching all browser threads for responsiveness.
ThreadWatcherList::StartWatchingAll(parsed_command_line());
#if !defined(DISABLE_NACL)
NaClProcessHost::EarlyStartup();
#endif
PreBrowserStart();
// Instantiate the notification UI manager, as this triggers a perf timer
// used to measure startup time. TODO(stevenjb): Figure out what is actually
// triggering the timer and call that explicitly in the approprate place.
// http://crbug.com/105065.
browser_process_->notification_ui_manager();
if (parameters().ui_task) {
// We are in test mode. Run one task and enter the main message loop.
process_singleton_->Unlock();
#if defined(OS_MACOSX)
if (parameters().autorelease_pool)
parameters().autorelease_pool->Recycle();
#endif
parameters().ui_task->Run();
delete parameters().ui_task;
run_message_loop_ = false;
} else {
// Most general initialization is behind us, but opening a
// tab and/or session restore and such is still to be done.
base::TimeTicks browser_open_start = base::TimeTicks::Now();
// We are in regular browser boot sequence. Open initial tabs and enter the
// main message loop.
int result_code;
#if defined(OS_CHROMEOS)
// On ChromeOS multiple profiles doesn't apply, and will break if we load
// them this early as the cryptohome hasn't yet been mounted (which happens
// only once we log in.
std::vector<Profile*> last_opened_profiles;
#else
std::vector<Profile*> last_opened_profiles =
g_browser_process->profile_manager()->GetLastOpenedProfiles();
#endif
if (browser_init_->Start(parsed_command_line(), FilePath(),
profile_, last_opened_profiles, &result_code)) {
#if defined(OS_WIN) || (defined(OS_LINUX) && !defined(OS_CHROMEOS))
// Initialize autoupdate timer. Timer callback costs basically nothing
// when browser is not in persistent mode, so it's OK to let it ride on
// the main thread. This needs to be done here because we don't want
// to start the timer when Chrome is run inside a test harness.
browser_process_->StartAutoupdateTimer();
#endif
#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
// On Linux, the running exe will be updated if an upgrade becomes
// available while the browser is running. We need to save the last
// modified time of the exe, so we can compare to determine if there is
// an upgrade while the browser is kept alive by a persistent extension.
upgrade_util::SaveLastModifiedTimeOfExe();
#endif
// Record now as the last successful chrome start.
GoogleUpdateSettings::SetLastRunTime();
#if defined(OS_MACOSX)
// Call Recycle() here as late as possible, before going into the loop
// because Start() will add things to it while creating the main window.
if (parameters().autorelease_pool)
parameters().autorelease_pool->Recycle();
#endif
RecordPreReadExperimentTime("Startup.BrowserOpenTabs",
base::TimeTicks::Now() - browser_open_start);
// TODO(mad): Move this call in a proper place on CrOS.
// http://crosbug.com/17687
#if !defined(OS_CHROMEOS)
// If we're running tests (ui_task is non-null), then we don't want to
// call FetchLanguageListFromTranslateServer
if (parameters().ui_task == NULL && translate_manager_ != NULL) {
translate_manager_->FetchLanguageListFromTranslateServer(
profile_->GetPrefs());
}
#endif
run_message_loop_ = true;
} else {
run_message_loop_ = false;
}
}
browser_init_.reset();
PostBrowserStart();
return result_code_;
}
bool ChromeBrowserMainParts::MainMessageLoopRun(int* result_code) {
// Set the result code set in PreMainMessageLoopRun or set above.
*result_code = result_code_;
if (!run_message_loop_)
return true; // Don't run the default message loop.
// This should be invoked as close to the start of the browser's
// UI thread message loop as possible to get a stable measurement
// across versions.
RecordBrowserStartupTime();
#if defined(USE_AURA)
ash::Shell::GetRootWindow()->ShowRootWindow();
MessageLoopForUI::current()->Run();
#elif defined(TOOLKIT_VIEWS)
views::AcceleratorHandler accelerator_handler;
MessageLoopForUI::current()->RunWithDispatcher(&accelerator_handler);
#elif defined(USE_X11)
MessageLoopForUI::current()->RunWithDispatcher(NULL);
#elif defined(OS_POSIX)
MessageLoopForUI::current()->Run();
#endif
return true;
}
void ChromeBrowserMainParts::PostMainMessageLoopRun() {
// Start watching for jank during shutdown. It gets disarmed when
// |shutdown_watcher_| object is destructed.
shutdown_watcher_->Arm(base::TimeDelta::FromSeconds(300));
// Disarm the startup hang detector time bomb if it is still Arm'ed.
startup_watcher_->Disarm();
for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
chrome_extra_parts_[i]->PostMainMessageLoopRun();
#if defined(OS_WIN)
// Log the search engine chosen on first run. Do this at shutdown, after any
// changes are made from the first run bubble link, etc.
if (record_search_engine_) {
TemplateURLService* url_service =
TemplateURLServiceFactory::GetForProfile(profile_);
const TemplateURL* default_search_engine =
url_service->GetDefaultSearchProvider();
// The default engine can be NULL if the administrator has disabled
// default search.
SearchEngineType search_engine_type =
TemplateURLPrepopulateData::GetEngineType(default_search_engine ?
default_search_engine->url() : std::string());
// Record the search engine chosen.
UMA_HISTOGRAM_ENUMERATION("Chrome.SearchSelectExempt", search_engine_type,
SEARCH_ENGINE_MAX);
}
#endif
// Some tests don't set parameters.ui_task, so they started translate
// language fetch that was never completed so we need to cleanup here
// otherwise it will be done by the destructor in a wrong thread.
if (parameters().ui_task == NULL && translate_manager_ != NULL)
translate_manager_->CleanupPendingUlrFetcher();
if (notify_result_ == ProcessSingleton::PROCESS_NONE)
process_singleton_->Cleanup();
// Stop all tasks that might run on WatchDogThread.
ThreadWatcherList::StopWatchingAll();
browser_process_->metrics_service()->Stop();
restart_last_session_ = browser_shutdown::ShutdownPreThreadsStop();
browser_process_->StartTearDown();
}
void ChromeBrowserMainParts::PostDestroyThreads() {
browser_process_->PostDestroyThreads();
// browser_shutdown takes care of deleting browser_process, so we need to
// release it.
ignore_result(browser_process_.release());
browser_shutdown::ShutdownPostThreadsStop(restart_last_session_);
master_prefs_.reset();
process_singleton_.reset();
// We need to do this check as late as possible, but due to modularity, this
// may be the last point in Chrome. This would be more effective if done at
// a higher level on the stack, so that it is impossible for an early return
// to bypass this code. Perhaps we need a *final* hook that is called on all
// paths from content/browser/browser_main.
CHECK(MetricsService::UmaMetricsProperlyShutdown());
}
// Public members:
void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
chrome_extra_parts_.push_back(parts);
}
// Misc ------------------------------------------------------------------------
// This code is specific to the Windows-only PreReadExperiment field-trial.
void RecordPreReadExperimentTime(const char* name, base::TimeDelta time) {
DCHECK(name != NULL);
// This gets called with different histogram names, so we don't want to use
// the UMA_HISTOGRAM_CUSTOM_TIMES macro--it uses a static variable, and the
// first call wins.
AddPreReadHistogramTime(name, time);
#if defined(OS_WIN)
#if defined(GOOGLE_CHROME_BUILD)
// The pre-read experiment is Windows and Google Chrome specific.
scoped_ptr<base::Environment> env(base::Environment::Create());
// Only record the sub-histogram result if the experiment is running
// (environment variable is set, and valid).
std::string pre_read_percentage;
if (env->GetVar(chrome::kPreReadEnvironmentVariable, &pre_read_percentage)) {
std::string uma_name(name);
// We want XP to record a separate histogram, as the loader on XP
// is very different from the Vista and Win7 loaders.
if (base::win::GetVersion() <= base::win::VERSION_XP)
uma_name += "_XP";
uma_name += "_PreRead_";
uma_name += pre_read_percentage;
AddPreReadHistogramTime(uma_name.c_str(), time);
}
#endif
#endif
}