Added syncable priority pref for ChromeOS first-run UI.

First-run UI will be shown for user only once.
Also changed place where we decide to show or not to show first-run tutorial
for user. Now decision made in the same place, where we made decision for
"Tips & Tricks" app.

BUG=269739,323261

Review URL: https://codereview.chromium.org/116543002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241315 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index 57673b1..e15d052ce 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -140,6 +140,7 @@
 #include "chrome/browser/chromeos/customization_document.h"
 #include "chrome/browser/chromeos/display/display_preferences.h"
 #include "chrome/browser/chromeos/extensions/echo_private_api.h"
+#include "chrome/browser/chromeos/first_run/first_run.h"
 #include "chrome/browser/chromeos/login/default_pinned_apps_field_trial.h"
 #include "chrome/browser/chromeos/login/login_utils.h"
 #include "chrome/browser/chromeos/login/multi_profile_first_run_notification.h"
@@ -423,6 +424,7 @@
 #if defined(OS_CHROMEOS)
   chromeos::attestation::PlatformVerificationFlow::RegisterProfilePrefs(
       registry);
+  chromeos::first_run::RegisterProfilePrefs(registry);
   chromeos::MultiProfileFirstRunNotification::RegisterProfilePrefs(registry);
   chromeos::MultiProfileUserController::RegisterProfilePrefs(registry);
   chromeos::Preferences::RegisterProfilePrefs(registry);