FileAPI/sync file system cleanups for scoped_refptr operator T* cleanup.

chrome/browser/sync_file_system/local/canned_syncable_file_system.h

 // Copyright 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.
 
 #ifndef CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_CANNED_SYNCABLE_FILE_SYSTEM_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_CANNED_SYNCABLE_FILE_SYSTEM_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 52 matching lines @@
       OpenFileSystemCallback;
   typedef base::Callback<void(base::File::Error)> StatusCallback;
   typedef base::Callback<void(int64)> WriteCallback;
   typedef storage::FileSystemOperation::FileEntryList FileEntryList;
 
   enum QuotaMode {
     QUOTA_ENABLED,
     QUOTA_DISABLED,
   };
 
-  CannedSyncableFileSystem(const GURL& origin,
-                           leveldb::Env* env_override,
-                           base::SingleThreadTaskRunner* io_task_runner,
-                           base::SingleThreadTaskRunner* file_task_runner);
+  CannedSyncableFileSystem(
+      const GURL& origin,
+      leveldb::Env* env_override,
+      const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner,
+      const scoped_refptr<base::SingleThreadTaskRunner>& file_task_runner);
   virtual ~CannedSyncableFileSystem();
 
   // SetUp must be called before using this instance.
   void SetUp(QuotaMode quota_mode);
 
   // TearDown must be called before destructing this instance.
   void TearDown();
 
   // Creates a FileSystemURL for the given (utf8) path string.
   storage::FileSystemURL URL(const std::string& path) const;
@@ skipping 156 matching lines @@
   bool is_filesystem_opened_;  // Should be accessed only on the IO thread.
 
   scoped_refptr<ObserverList> sync_status_observers_;
 
   DISALLOW_COPY_AND_ASSIGN(CannedSyncableFileSystem);
 };
 
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_LOCAL_CANNED_SYNCABLE_FILE_SYSTEM_H_