Cache GAIA profile picture URL

chrome/browser/chromeos/login/user_manager.cc

 // Copyright (c) 2011 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/chromeos/login/user_manager.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/file_path.h"
@@ skipping 814 matching lines @@
 
   // UserManager should be accessed only on UI thread.
   BrowserThread::PostTask(
       BrowserThread::UI,
       FROM_HERE,
       base::Bind(&UserManager::UpdateOwnership,
                  base::Unretained(this),
                  is_owner));
 }
 
-int UserManager::GetDesiredImageSideLength() {
+int UserManager::GetDesiredImageSideLength() const {
   return login::kUserImageSize;
 }
 
 Profile* UserManager::GetBrowserProfile() {
   return ProfileManager::GetDefaultProfile();
 }
 
-bool UserManager::ShouldUseOAuthRefreshToken() {
+bool UserManager::ShouldUseOAuthRefreshToken() const {
   return false;
 }
 
+std::string UserManager::GetCachedPictureURL() const {
+  // Currently the profile picture URL is not cached on ChromeOS.
+  return std::string();
+}
+
 void UserManager::OnDownloadComplete(ProfileDownloader* downloader,
                                      bool success) {
   ProfileDownloadResult result;
   std::string time_histogram_name;
   if (!success) {
     result = kDownloadFailure;
     time_histogram_name = kProfileDownloadFailureTime;
   } else if (downloader->GetProfilePicture().isNull()) {
     result = kDownloadDefault;
     time_histogram_name = kProfileDownloadDefaultTime;
@@ skipping 49 matching lines @@
 
 User* UserManager::CreateUser(const std::string& email) const {
   User* user = new User(email);
   user->set_oauth_token_status(GetUserOAuthStatus(email));
   // Used to determine whether user's display name is unique.
   ++display_name_count_[user->GetDisplayName()];
   return user;
 }
 
 }  // namespace chromeos