If user profile doesn't contain language setting, default to his Google account settings.

chrome/browser/profiles/off_the_record_profile_impl.cc

 // 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/profiles/off_the_record_profile_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
@@ skipping 387 matching lines @@
   // The incognito profile shouldn't have Chrome OS's preferences.
   // The preferences are associated with the regular user profile.
 }
 #endif  // defined(OS_CHROMEOS)
 
 #if defined(OS_CHROMEOS)
 void OffTheRecordProfileImpl::ChangeAppLocale(const std::string& locale,
                                               AppLocaleChangedVia) {
 }
 
+void OffTheRecordProfileImpl::MarkCreated() {
+}
+
 void OffTheRecordProfileImpl::OnLogin() {
 }
+
+void OffTheRecordProfileImpl::RespectLocalePreference() {
+}
+
+void OffTheRecordProfileImpl::SetGPlusProfileLocale(const std::string&) {
+}
 #endif  // defined(OS_CHROMEOS)
 
 PrefProxyConfigTracker* OffTheRecordProfileImpl::GetProxyConfigTracker() {
   if (!pref_proxy_config_tracker_)
     pref_proxy_config_tracker_.reset(CreateProxyConfigTracker());
   return pref_proxy_config_tracker_.get();
 }
 
 chrome_browser_net::Predictor* OffTheRecordProfileImpl::GetNetworkPredictor() {
   // We do not store information about websites visited in OTR profiles which
@@ skipping 24 matching lines @@
  public:
   explicit GuestSessionProfile(Profile* real_profile)
       : OffTheRecordProfileImpl(real_profile) {
   }
 
   virtual void InitChromeOSPreferences() OVERRIDE {
     chromeos_preferences_.reset(new chromeos::Preferences());
     chromeos_preferences_->Init(static_cast<PrefServiceSyncable*>(GetPrefs()));
   }
 
+  virtual std::string GetGPlusLocale() const OVERRIDE {
+    return std::string();
+  }
+
+  virtual void SetGPlusProfileLocale(const std::string&) OVERRIDE {
+  }
+
  private:
   // The guest user should be able to customize Chrome OS preferences.
   scoped_ptr<chromeos::Preferences> chromeos_preferences_;
 };
 #endif
 
 Profile* Profile::CreateOffTheRecordProfile() {
   OffTheRecordProfileImpl* profile = NULL;
 #if defined(OS_CHROMEOS)
   if (IsGuestSession())
@@ skipping 26 matching lines @@
 #if defined(OS_CHROMEOS)
   if (chromeos::ProfileHelper::IsSigninProfile(this)) {
     return ProxyServiceFactory::CreatePrefProxyConfigTrackerOfLocalState(
         g_browser_process->local_state());
   }
 #endif  // defined(OS_CHROMEOS)
   return ProxyServiceFactory::CreatePrefProxyConfigTrackerOfProfile(
       GetPrefs(), g_browser_process->local_state());
 }