Refactor ProfileInfoCache in c/b/ui/app_list

chrome/browser/profiles/profile_info_cache.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_PROFILES_PROFILE_INFO_CACHE_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_INFO_CACHE_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 164 matching lines @@
                                      const base::FilePath& profile_path);
 
   // Saves the avatar |image| at |image_path|. This is used both for the
   // GAIA profile pictures and the ProfileAvatarDownloader that is used to
   // download the high res avatars.
   void SaveAvatarImageAtPath(const gfx::Image* image,
                              const std::string& key,
                              const base::FilePath& image_path,
                              const base::FilePath& profile_path);
 
-  void AddObserver(ProfileInfoCacheObserver* obs);
-  void RemoveObserver(ProfileInfoCacheObserver* obs);
+  void AddObserver(ProfileInfoCacheObserver* obs) override;
+  void RemoveObserver(ProfileInfoCacheObserver* obs) override;
 
   void set_disable_avatar_download_for_testing(
       bool disable_avatar_download_for_testing) {
     disable_avatar_download_for_testing_ = disable_avatar_download_for_testing;
   }
 
   // ProfileAttributesStorage:
   void AddProfile(const base::FilePath& profile_path,
                   const base::string16& name,
                   const std::string& gaia_id,
@@ skipping 89 matching lines @@
       avatar_images_downloads_in_progress_;
 
   // Determines of the ProfileAvatarDownloader should be created and executed
   // or not. Only set to true for tests.
   bool disable_avatar_download_for_testing_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileInfoCache);
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_INFO_CACHE_H_