Remove all remaining traces of MessageLoopProxy.

device/media_transfer_protocol/media_transfer_protocol_manager.h

 // Copyright (c) 2012 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 DEVICE_MEDIA_TRANSFER_PROTOCOL_MEDIA_TRANSFER_PROTOCOL_MANAGER_H_
 #define DEVICE_MEDIA_TRANSFER_PROTOCOL_MEDIA_TRANSFER_PROTOCOL_MANAGER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 158 matching lines @@
 
   // Deletes |object_id|.
   virtual void DeleteObject(const std::string& storage_handle,
                             const uint32_t object_id,
                             const DeleteObjectCallback& callback) = 0;
 
   // Creates and returns the global MediaTransferProtocolManager instance.
   // On Linux, |task_runner| specifies the task runner to process asynchronous
   // operations.
   // On ChromeOS, |task_runner| should just be set to NULL because ChromeOS
-  // already has a dedicated message loop proxy.
+  // already has a dedicated task runner.
   static MediaTransferProtocolManager* Initialize(
       scoped_refptr<base::SequencedTaskRunner> task_runner);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_MEDIA_TRANSFER_PROTOCOL_MEDIA_TRANSFER_PROTOCOL_MANAGER_H_