Change ScopedPtrHashMap's 2nd template parameter

chrome/browser/sync_file_system/drive_backend/sync_task_manager.h

 // Copyright 2014 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_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_TASK_MANAGER_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_TASK_MANAGER_H_
 
 #include <queue>
 #include <vector>
 
@@ skipping 158 matching lines @@
   // If |token| is non-nullptr, put |token| back to |token_| beforehand.
   void MaybeStartNextForegroundTask(scoped_ptr<SyncTaskToken> token);
 
   base::WeakPtr<Client> client_;
 
   // Owns running SyncTask to cancel the task on SyncTaskManager deletion.
   scoped_ptr<SyncTask> running_foreground_task_;
 
   // Owns running backgrounded SyncTask to cancel the task on SyncTaskManager
   // deletion.
-  base::ScopedPtrHashMap<int64, SyncTask> running_background_tasks_;
+  base::ScopedPtrHashMap<int64, scoped_ptr<SyncTask>> running_background_tasks_;
 
   size_t maximum_background_task_;
 
   // Holds pending continuation to move task to background.
   base::Closure pending_backgrounding_task_;
 
   std::priority_queue<PendingTask, std::vector<PendingTask>,
                       PendingTaskComparator> pending_tasks_;
   int64 pending_task_seq_;
   int64 task_token_seq_;
@@ skipping 13 matching lines @@
 
   base::WeakPtrFactory<SyncTaskManager> weak_ptr_factory_;;
 
   DISALLOW_COPY_AND_ASSIGN(SyncTaskManager);
 };
 
 }  // namespace drive_backend
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_TASK_MANAGER_H_