ChromeOS: switch UI language before apps are loaded.

chrome/browser/profiles/profile_impl.h

Index: chrome/browser/profiles/profile_impl.h
diff --git a/chrome/browser/profiles/profile_impl.h b/chrome/browser/profiles/profile_impl.h
index 14599cfec92cb79cb4e2af26c85ca935169651d6..e86f2fe8fc5b68398f750bf8b545e683ad9d0b20 100644
--- a/chrome/browser/profiles/profile_impl.h
+++ b/chrome/browser/profiles/profile_impl.h
@@ -165,9 +165,15 @@ class ProfileImpl : public Profile {
   // Does final initialization. Should be called after prefs were loaded.
   void DoFinalInit();
 
-  // Does final prefs initialization and calls Init().
+  // Check |success| and proceed to SwitchUILanguage.
   void OnPrefsLoaded(bool success);
 
+  // Switches UI language if possible.
+  void SwitchUILanguage();
+
+  // Does final prefs initialization and calls Init().
+  void OnLanguageSwitched();
+
 #if defined(ENABLE_SESSION_SERVICE)
   void StopCreateSessionServiceTimer();