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

chrome/browser/chromeos/login/mock_user_manager.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_MOCK_USER_MANAGER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_MOCK_USER_MANAGER_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
@@ skipping 24 matching lines @@
   MOCK_METHOD0(RestoreActiveSessions, void(void));
   MOCK_METHOD2(RemoveUser, void(const std::string&, RemoveUserDelegate*));
   MOCK_METHOD1(RemoveUserFromList, void(const std::string&));
   MOCK_CONST_METHOD1(IsKnownUser, bool(const std::string&));
   MOCK_CONST_METHOD1(FindUser, const User*(const std::string&));
   MOCK_CONST_METHOD1(FindLocallyManagedUser, const User*(const string16&));
   MOCK_METHOD2(SaveUserOAuthStatus, void(const std::string&,
                                          User::OAuthTokenStatus));
   MOCK_METHOD2(SaveUserDisplayName, void(const std::string&,
                                          const string16&));
+  MOCK_METHOD3(UpdateUserAccountData,
+               void(const std::string&, const string16&, const std::string&));
   MOCK_CONST_METHOD1(GetUserDisplayName, string16(const std::string&));
   MOCK_METHOD2(SaveUserDisplayEmail, void(const std::string&,
                                           const std::string&));
   MOCK_CONST_METHOD1(GetUserDisplayEmail, std::string(const std::string&));
   MOCK_CONST_METHOD0(IsCurrentUserOwner, bool(void));
   MOCK_CONST_METHOD0(IsCurrentUserNew, bool(void));
   MOCK_CONST_METHOD0(IsCurrentUserNonCryptohomeDataEphemeral, bool(void));
   MOCK_CONST_METHOD0(CanCurrentUserLock, bool(void));
   MOCK_CONST_METHOD0(IsUserLoggedIn, bool(void));
   MOCK_CONST_METHOD0(IsLoggedInAsRegularUser, bool(void));
@@ skipping 64 matching lines @@
   User* CreatePublicAccountUser(const std::string& email);
 
   User* user_;
   scoped_ptr<MockUserImageManager> user_image_manager_;
   scoped_ptr<UserFlow> user_flow_;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_MOCK_USER_MANAGER_H_