UserManager shutdown now also stops the profile image downloader.

chrome/browser/chromeos/login/user_image_manager_impl.cc

 // Copyright (c) 2013 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_image_manager_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/file_util.h"
@@ skipping 399 matching lines @@
 
 void UserImageManagerImpl::DownloadProfileImage(const std::string& reason) {
   DownloadProfileData(reason, true);
 }
 
 UserImageSyncObserver* UserImageManagerImpl::GetSyncObserver() const {
   return user_image_sync_observer_.get();
 }
 
 void UserImageManagerImpl::Shutdown() {
+  profile_image_downloader_.reset();
   user_image_sync_observer_.reset();
 }
 
 const gfx::ImageSkia& UserImageManagerImpl::DownloadedProfileImage() const {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   return downloaded_profile_image_;
 }
 
 base::FilePath UserImageManagerImpl::GetImagePathForUser(
     const std::string& username) {
@@ skipping 363 matching lines @@
   if (prefs_images_update->GetDictionaryWithoutPathExpansion(
           username, &image_properties)) {
     std::string image_path;
     image_properties->GetString(kImagePathNodeName, &image_path);
     prefs_images_update->RemoveWithoutPathExpansion(username, NULL);
     DeleteImageFile(image_path);
   }
 }
 
 }  // namespace chromeos