Remove stray platform_file.h from chrome and components

chrome/browser/media_galleries/linux/mtp_device_task_helper.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_MEDIA_GALLERIES_LINUX_MTP_DEVICE_TASK_HELPER_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_LINUX_MTP_DEVICE_TASK_HELPER_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
-#include "base/platform_file.h"
 #include "chrome/browser/media_galleries/fileapi/mtp_device_async_delegate.h"
 #include "device/media_transfer_protocol/mtp_file_entry.pb.h"
 #include "webkit/browser/fileapi/async_file_util.h"
 
 class MTPReadFileWorker;
 struct SnapshotRequestInfo;
 
 // MTPDeviceTaskHelper dispatches the media transfer protocol (MTP) device
 // operation requests (such as GetFileInfo, ReadDirectory, CreateSnapshotFile,
 // OpenStorage and CloseStorage) to the MediaTransferProtocolManager.
@@ skipping 146 matching lines @@
   // Used to handle WriteDataInfoSnapshotFile request.
   scoped_ptr<MTPReadFileWorker> read_file_worker_;
 
   // For callbacks that may run after destruction.
   base::WeakPtrFactory<MTPDeviceTaskHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MTPDeviceTaskHelper);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_LINUX_MTP_DEVICE_TASK_HELPER_H_