Change media galleries to external file system type to add toURL support

chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.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_MTP_DEVICE_ASYNC_DELEGATE_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MTP_DEVICE_ASYNC_DELEGATE_H_
 
 #include "base/callback.h"
 #include "base/files/file.h"
 #include "base/memory/ref_counted.h"
 #include "webkit/browser/fileapi/async_file_util.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace net {
 class IOBuffer;
 }
 
 // Asynchronous delegate for media transfer protocol (MTP) device to perform
-// media device isolated file system operations. Class that implements this
+// media device file system operations. Class that implements this
 // delegate does the actual communication with the MTP device.
 // The lifetime of the delegate is managed by the MTPDeviceMapService class.
 // Member functions and callbacks run on the IO thread.
 class MTPDeviceAsyncDelegate {
  public:
   // A callback to be called when GetFileInfo method call succeeds.
   typedef base::Callback<
       void(const base::File::Info& file_info)> GetFileInfoSuccessCallback;
 
   // A callback to be called when ReadDirectory method call succeeds.
@@ skipping 81 matching lines @@
 };
 
 typedef base::Callback<void(MTPDeviceAsyncDelegate*)>
     CreateMTPDeviceAsyncDelegateCallback;
 
 void CreateMTPDeviceAsyncDelegate(
     const base::FilePath::StringType& device_location,
     const CreateMTPDeviceAsyncDelegateCallback& callback);
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_MTP_DEVICE_ASYNC_DELEGATE_H_