Change some snapshot- or temporary-file related changes to use ScopedFile

chrome/browser/media_galleries/fileapi/device_media_async_file_util.h

 // 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.
 
 #ifndef CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_DEVICE_MEDIA_ASYNC_FILE_UTIL_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_DEVICE_MEDIA_ASYNC_FILE_UTIL_H_
 
 #include "base/files/file_path.h"
 #include "base/memory/weak_ptr.h"
 #include "base/platform_file.h"
 #include "webkit/fileapi/async_file_util.h"
 
 namespace base {
+class SequencedTaskRunner;
 class Time;
 }
 
 namespace fileapi {
 class FileSystemOperationContext;
 class FileSystemURL;
 }
 
 namespace chrome {
 
@@ skipping 111 matching lines @@
   void OnReadDirectoryError(
       const AsyncFileUtil::ReadDirectoryCallback& callback,
       base::PlatformFileError error);
 
   // Called when the snapshot file specified by the |platform_path| is
   // successfully created. |file_info| contains the device media file details
   // for which the snapshot file is created. |callback| is invoked to complete
   // the CreateSnapshotFile request.
   void OnDidCreateSnapshotFile(
       const AsyncFileUtil::CreateSnapshotFileCallback& callback,
+      base::SequencedTaskRunner* media_task_runner,
       const base::PlatformFileInfo& file_info,
       const base::FilePath& platform_path);
 
   // Called when CreateSnapshotFile method call fails. |callback| is invoked to
   // notify the caller about the |error|.
   void OnCreateSnapshotFileError(
       const AsyncFileUtil::CreateSnapshotFileCallback& callback,
       base::PlatformFileError error);
 
   // Called when the snapshot file specified by the |snapshot_file_path| is
@@ skipping 13 matching lines @@
 
   // For callbacks that may run after destruction.
   base::WeakPtrFactory<DeviceMediaAsyncFileUtil> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceMediaAsyncFileUtil);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_DEVICE_MEDIA_ASYNC_FILE_UTIL_H_