Disable Web Notifications in Incognito

Requests for notifications (and hence push messaging) permissions in
incognito will be auto-denied after a random 1-2 second delay.

This prevents websites from detecting incognito mode, by observing
that notifications are available in incognito but push messaging is not
(until https://crbug.com/401439 is implemented).

Depends on:
- https://codereview.chromium.org/1442083002

Known caveat: Prevents legitimate use of notifications in incognito :(

BUG=479679,542081

Review URL: https://codereview.chromium.org/1575623002

Cr-Commit-Position: refs/heads/master@{#369644}
diff --git a/chrome/browser/ui/cocoa/website_settings/permission_selector_button_unittest.mm b/chrome/browser/ui/cocoa/website_settings/permission_selector_button_unittest.mm
index 10690b21..bb3f8d27 100644
--- a/chrome/browser/ui/cocoa/website_settings/permission_selector_button_unittest.mm
+++ b/chrome/browser/ui/cocoa/website_settings/permission_selector_button_unittest.mm
@@ -25,6 +25,7 @@
     test_info.type = kTestPermissionType;
     test_info.setting = CONTENT_SETTING_BLOCK;
     test_info.source = content_settings::SETTING_SOURCE_USER;
+    test_info.is_incognito = false;
     GURL test_url("http://www.google.com");
     PermissionMenuModel::ChangeCallback callback = base::Bind(
         &PermissionSelectorButtonTest::Callback, base::Unretained(this));
diff --git a/chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller.mm b/chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller.mm
index 7f32a38b..a19897b4 100644
--- a/chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller.mm
+++ b/chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller.mm
@@ -1355,6 +1355,8 @@
   WebsiteSettingsUI::PermissionInfo info;
   info.type = CONTENT_SETTINGS_TYPE_COOKIES;
   info.setting = CONTENT_SETTING_ALLOW;
+  // info.default_setting, info.source, and info.is_incognito have not been set,
+  // but GetPermissionIcon doesn't use any of those.
   NSImage* image = WebsiteSettingsUI::GetPermissionIcon(info).ToNSImage();
   NSImageView* imageView = [self addImageWithSize:[image size]
                                            toView:cookiesView_
diff --git a/chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller_unittest.mm b/chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller_unittest.mm
index e8a5140f..b602bc61 100644
--- a/chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller_unittest.mm
+++ b/chrome/browser/ui/cocoa/website_settings/website_settings_bubble_controller_unittest.mm
@@ -224,6 +224,7 @@
       if (info.setting == CONTENT_SETTING_DEFAULT)
         info.default_setting = kTestDefaultSettings[i];
       info.source = kTestSettingSources[i];
+      info.is_incognito = false;
       permission_info_list.push_back(info);
     }
     ChosenObjectInfoList chosen_object_info_list;
diff --git a/chrome/browser/ui/views/website_settings/website_settings_popup_view.cc b/chrome/browser/ui/views/website_settings/website_settings_popup_view.cc
index fd8a371..65fd94f 100644
--- a/chrome/browser/ui/views/website_settings/website_settings_popup_view.cc
+++ b/chrome/browser/ui/views/website_settings/website_settings_popup_view.cc
@@ -590,6 +590,9 @@
     WebsiteSettingsUI::PermissionInfo info;
     info.type = CONTENT_SETTINGS_TYPE_COOKIES;
     info.setting = CONTENT_SETTING_ALLOW;
+    info.is_incognito =
+        Profile::FromBrowserContext(web_contents_->GetBrowserContext())
+            ->IsOffTheRecord();
     views::ImageView* icon = new views::ImageView();
     const gfx::Image& image = WebsiteSettingsUI::GetPermissionIcon(info);
     icon->SetImage(image.ToImageSkia());
diff --git a/chrome/browser/ui/views/website_settings/website_settings_popup_view_unittest.cc b/chrome/browser/ui/views/website_settings/website_settings_popup_view_unittest.cc
index 33b3939..2dbffee 100644
--- a/chrome/browser/ui/views/website_settings/website_settings_popup_view_unittest.cc
+++ b/chrome/browser/ui/views/website_settings/website_settings_popup_view_unittest.cc
@@ -161,6 +161,7 @@
   PermissionInfoList list(1);
   list.back().type = CONTENT_SETTINGS_TYPE_GEOLOCATION;
   list.back().source = content_settings::SETTING_SOURCE_USER;
+  list.back().is_incognito = false;
 
   EXPECT_EQ(0, api_->permissions_content()->child_count());
 
diff --git a/chrome/browser/ui/website_settings/permission_bubble_manager.cc b/chrome/browser/ui/website_settings/permission_bubble_manager.cc
index 0c657f2..50f2a4f 100644
--- a/chrome/browser/ui/website_settings/permission_bubble_manager.cc
+++ b/chrome/browser/ui/website_settings/permission_bubble_manager.cc
@@ -110,6 +110,9 @@
           .IsSameOriginWith(url::Origin(request->GetRequestingHostname()));
 
   // Don't re-add an existing request or one with a duplicate text request.
+  // TODO(johnme): Instead of dropping duplicate requests, we should queue them
+  // and eventually run their PermissionGranted/PermissionDenied/Cancelled
+  // callback (crbug.com/577313).
   bool same_object = false;
   if (ExistingRequest(request, requests_, &same_object) ||
       ExistingRequest(request, queued_requests_, &same_object) ||
diff --git a/chrome/browser/ui/website_settings/permission_menu_model.cc b/chrome/browser/ui/website_settings/permission_menu_model.cc
index 9f63ee575..7a6ff0d 100644
--- a/chrome/browser/ui/website_settings/permission_menu_model.cc
+++ b/chrome/browser/ui/website_settings/permission_menu_model.cc
@@ -58,11 +58,16 @@
        permission_.type == CONTENT_SETTINGS_TYPE_MOUSELOCK) &&
       url.SchemeIsFile();
 
+  // Notifications does not support CONTENT_SETTING_ALLOW in incognito.
+  bool allow_disabled_for_notifications =
+      permission_.is_incognito &&
+      permission_.type == CONTENT_SETTINGS_TYPE_NOTIFICATIONS;
   // Media only supports CONTENT_SETTTING_ALLOW for secure origins.
   bool is_media_permission =
       permission_.type == CONTENT_SETTINGS_TYPE_MEDIASTREAM_MIC ||
       permission_.type == CONTENT_SETTINGS_TYPE_MEDIASTREAM_CAMERA;
-  if ((!is_media_permission || content::IsOriginSecure(url)) &&
+  if (!allow_disabled_for_notifications &&
+      (!is_media_permission || content::IsOriginSecure(url)) &&
       !is_exclusive_access_on_file) {
     label = l10n_util::GetStringUTF16(
         IDS_WEBSITE_SETTINGS_MENU_ITEM_ALLOW);
diff --git a/chrome/browser/ui/website_settings/permission_menu_model_unittest.cc b/chrome/browser/ui/website_settings/permission_menu_model_unittest.cc
index 747e2e3..718f108 100644
--- a/chrome/browser/ui/website_settings/permission_menu_model_unittest.cc
+++ b/chrome/browser/ui/website_settings/permission_menu_model_unittest.cc
@@ -31,6 +31,7 @@
   permission.type = CONTENT_SETTINGS_TYPE_COOKIES;
   permission.setting = CONTENT_SETTING_ALLOW;
   permission.default_setting = CONTENT_SETTING_ALLOW;
+  permission.is_incognito = false;
   PermissionMenuModel model(
       GURL("http://www.google.com"), permission, callback.callback());
   EXPECT_EQ(3, model.GetItemCount());
@@ -45,6 +46,7 @@
     permission.type = type;
     permission.setting = CONTENT_SETTING_ALLOW;
     permission.default_setting = CONTENT_SETTING_ALLOW;
+    permission.is_incognito = false;
     PermissionMenuModel model(
         GURL("http://www.google.com"), permission, callback.callback());
     EXPECT_EQ(2, model.GetItemCount());
@@ -65,6 +67,7 @@
   permission.type = CONTENT_SETTINGS_TYPE_FULLSCREEN;
   permission.setting = CONTENT_SETTING_ASK;
   permission.default_setting = CONTENT_SETTING_ASK;
+  permission.is_incognito = false;
   PermissionMenuModel fullscreen_model(GURL("file:///test.html"), permission,
                                        callback.callback());
   EXPECT_EQ(1, fullscreen_model.GetItemCount());
@@ -80,3 +83,21 @@
       l10n_util::GetStringUTF16(IDS_WEBSITE_SETTINGS_MENU_ITEM_DEFAULT_ASK),
       fullscreen_model.GetLabelAt(0));
 }
+
+TEST(PermissionMenuModelTest, TestIncognitoNotifications) {
+  TestCallback callback;
+  WebsiteSettingsUI::PermissionInfo permission;
+  permission.type = CONTENT_SETTINGS_TYPE_NOTIFICATIONS;
+  permission.setting = CONTENT_SETTING_ASK;
+  permission.default_setting = CONTENT_SETTING_ASK;
+
+  permission.is_incognito = false;
+  PermissionMenuModel regular_model(GURL("https://www.google.com"), permission,
+                                    callback.callback());
+  EXPECT_EQ(3, regular_model.GetItemCount());
+
+  permission.is_incognito = true;
+  PermissionMenuModel incognito_model(GURL("https://www.google.com"),
+                                      permission, callback.callback());
+  EXPECT_EQ(2, incognito_model.GetItemCount());
+}
diff --git a/chrome/browser/ui/website_settings/website_settings.cc b/chrome/browser/ui/website_settings/website_settings.cc
index dfc92c8..6f817da7 100644
--- a/chrome/browser/ui/website_settings/website_settings.cc
+++ b/chrome/browser/ui/website_settings/website_settings.cc
@@ -699,6 +699,7 @@
     }
 
     permission_info.source = info.source;
+    permission_info.is_incognito = profile_->IsOffTheRecord();
 
     if (info.primary_pattern == ContentSettingsPattern::Wildcard() &&
         info.secondary_pattern == ContentSettingsPattern::Wildcard()) {
diff --git a/chrome/browser/ui/website_settings/website_settings_ui.cc b/chrome/browser/ui/website_settings/website_settings_ui.cc
index 936e5bd..373792e4 100644
--- a/chrome/browser/ui/website_settings/website_settings_ui.cc
+++ b/chrome/browser/ui/website_settings/website_settings_ui.cc
@@ -124,8 +124,8 @@
     : type(CONTENT_SETTINGS_TYPE_DEFAULT),
       setting(CONTENT_SETTING_DEFAULT),
       default_setting(CONTENT_SETTING_DEFAULT),
-      source(content_settings::SETTING_SOURCE_NONE) {
-}
+      source(content_settings::SETTING_SOURCE_NONE),
+      is_incognito(false) {}
 
 WebsiteSettingsUI::ChosenObjectInfo::ChosenObjectInfo(
     const WebsiteSettings::ChooserUIInfo& ui_info,
diff --git a/chrome/browser/ui/website_settings/website_settings_ui.h b/chrome/browser/ui/website_settings/website_settings_ui.h
index f284630..0ea8943 100644
--- a/chrome/browser/ui/website_settings/website_settings_ui.h
+++ b/chrome/browser/ui/website_settings/website_settings_ui.h
@@ -73,6 +73,8 @@
     ContentSetting default_setting;
     // The settings source e.g. user, extensions, policy, ... .
     content_settings::SettingSource source;
+    // Whether the profile is off the record.
+    bool is_incognito;
   };
 
   // |ChosenObjectInfo| contains information about a single |object| of a