ChromeOS: switch UI language before apps are loaded.

chrome/browser/profiles/off_the_record_profile_impl.h

Index: chrome/browser/profiles/off_the_record_profile_impl.h
diff --git a/chrome/browser/profiles/off_the_record_profile_impl.h b/chrome/browser/profiles/off_the_record_profile_impl.h
index ce70534e671d6c8c487c3c516b2160a913622d2b..786f9c904446331eac700d732717b758b39686ba 100644
--- a/chrome/browser/profiles/off_the_record_profile_impl.h
+++ b/chrome/browser/profiles/off_the_record_profile_impl.h
@@ -73,6 +73,9 @@ class OffTheRecordProfileImpl : public Profile {
   void ChangeAppLocale(const std::string& locale, AppLocaleChangedVia) override;
   void OnLogin() override;
   void InitChromeOSPreferences() override;
+  void SetOnPrefsLoadedHook(
+      const base::Callback<void(Profile*, const base::Closure&)>& callback)
+      override;
 #endif  // defined(OS_CHROMEOS)
 
   PrefProxyConfigTracker* GetProxyConfigTracker() override;