[cros] Cache the URL of user's G+ profile photo to prevent redundant downloads.

chrome/browser/chromeos/login/user_manager_impl.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_USER_MANAGER_IMPL_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_USER_MANAGER_IMPL_H_
 #pragma once
 
 #include <string>
 
@@ skipping 162 matching lines @@
   // The new wallpaper structure is:
   // { WallpaperType: RANDOM|CUSTOMIZED|DEFAULT,
   //   index: index of the default wallpapers }
   void MigrateWallpaperData();
 
   // Sets image for user |username| and sends LOGIN_USER_IMAGE_CHANGED
   // notification unless this is a new user and image is set for the first time.
   // If |image| is empty, sets a stub image for the user.
   void SetUserImage(const std::string& username,
                     int image_index,
+                    const GURL& image_url,
                     const UserImage& user_image);
 
   void GetUserWallpaperProperties(const std::string& username,
                                  User::WallpaperType* type,
                                  int* index);
   void SaveUserWallpaperProperties(const std::string& username,
                                    User::WallpaperType type,
                                    int index);
 
   // Saves image to file, updates local state preferences to given image index
   // and sends LOGIN_USER_IMAGE_CHANGED notification.
   void SaveUserImageInternal(const std::string& username,
                              int image_index,
+                             const GURL& image_url,
                              const UserImage& user_image);
 
   // Saves wallpaper to file, post task to generate thumbnail and updates local
   // state preferences.
   void SaveUserWallpaperInternal(const std::string& username,
                                  ash::WallpaperLayout layout,
                                  User::WallpaperType type,
                                  WallpaperDelegate* delegate,
                                  const UserImage& user_image);
 
@@ skipping 15 matching lines @@
                                       User::WallpaperType type,
                                       WallpaperDelegate* delegate,
                                       const SkBitmap& wallpaper);
 
   // Saves image to file with specified path and sends LOGIN_USER_IMAGE_CHANGED
   // notification. Runs on FILE thread. Posts task for saving image info to
   // Local State on UI thread.
   void SaveImageToFile(const std::string& username,
                        const UserImage& user_image,
                        const FilePath& image_path,
-                       int image_index);
+                       int image_index,
+                       const GURL& image_url);
 
   // Saves wallpaper to file with specified path. Runs on FILE thread. Posts
   // task for saving wallpaper info to Local State on UI thread.
   void SaveWallpaperToFile(const std::string& username,
                            const SkBitmap& wallpaper,
                            const FilePath& wallpaper_path,
                            ash::WallpaperLayout layout,
                            User::WallpaperType type);
 
   // Stores path to the image and its index in local state. Runs on UI thread.
   // If |is_async| is true, it has been posted from the FILE thread after
   // saving the image.
   void SaveImageToLocalState(const std::string& username,
                              const std::string& image_path,
                              int image_index,
+                             const GURL& image_url,
                              bool is_async);
 
   // Stores layout and type preference in local state. Runs on UI thread.
   void SaveWallpaperToLocalState(const std::string& username,
                                  const std::string& wallpaper_path,
                                  ash::WallpaperLayout layout,
                                  User::WallpaperType type);
 
   // Saves |image| to the specified |image_path|. Runs on FILE thread.
   bool SaveBitmapToFile(const UserImage& user_image,
@@ skipping 91 matching lines @@
   // have been completed yet). This flag is used to avoid races when user image
   // is first set with |SaveUserImage| and then with |SaveUserImagePath|.
   bool last_image_set_async_;
 
   // Result of the last successful profile image download, if any.
   SkBitmap downloaded_profile_image_;
 
   // Data URL for |downloaded_profile_image_|.
   std::string downloaded_profile_image_data_url_;
 
+  // Original URL of |downloaded_profile_image_|, from which it was downloaded.
+  GURL profile_image_url_;
+
   DISALLOW_COPY_AND_ASSIGN(UserManagerImpl);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_USER_MANAGER_IMPL_H_