Move Media Galleries FileAPI code out of webkit.

webkit/fileapi/media/mtp_device_map_service.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 WEBKIT_FILEAPI_MEDIA_MTP_DEVICE_MAP_SERVICE_H_
-#define WEBKIT_FILEAPI_MEDIA_MTP_DEVICE_MAP_SERVICE_H_
-
-#include <map>
-
-#include "base/files/file_path.h"
-#include "base/lazy_instance.h"
-#include "base/threading/thread_checker.h"
-#include "webkit/storage/webkit_storage_export.h"
-
-namespace fileapi {
-
-class MTPDeviceAsyncDelegate;
-
-// This class provides media transfer protocol (MTP) device delegate to
-// complete media file system operations. ScopedMTPDeviceMapEntry class
-// manages the device map entries.
-class WEBKIT_STORAGE_EXPORT MTPDeviceMapService {
- public:
-  static MTPDeviceMapService* GetInstance();
-
-  /////////////////////////////////////////////////////////////////////////////
-  //   Following methods are used to manage MTPDeviceAsyncDelegate objects.  //
-  /////////////////////////////////////////////////////////////////////////////
-  // Adds the MTP device delegate to the map service. |device_location|
-  // specifies the mount location of the MTP device.
-  // Called on the IO thread.
-  void AddAsyncDelegate(const base::FilePath::StringType& device_location,
-                        MTPDeviceAsyncDelegate* delegate);
-
-  // Removes the MTP device delegate from the map service. |device_location|
-  // specifies the mount location of the MTP device.
-  // Called on the IO thread.
-  void RemoveAsyncDelegate(const base::FilePath::StringType& device_location);
-
-  // Gets the media device delegate associated with |filesystem_id|.
-  // Return NULL if the |filesystem_id| is no longer valid (e.g. because the
-  // corresponding device is detached, etc).
-  // Called on the IO thread.
-  MTPDeviceAsyncDelegate* GetMTPDeviceAsyncDelegate(
-      const std::string& filesystem_id);
-
- private:
-  friend struct base::DefaultLazyInstanceTraits<MTPDeviceMapService>;
-
-  // Mapping of device_location and MTPDeviceAsyncDelegate* object. It is safe
-  // to store and access the raw pointer. This class operates on the IO thread.
-  typedef std::map<base::FilePath::StringType, MTPDeviceAsyncDelegate*>
-      AsyncDelegateMap;
-
-  // Get access to this class using GetInstance() method.
-  MTPDeviceMapService();
-  ~MTPDeviceMapService();
-
-  /////////////////////////////////////////////////////////////////////////////
-  // Following member variables are used to manage asynchronous              //
-  // MTP device delegate objects.                                            //
-  /////////////////////////////////////////////////////////////////////////////
-  // Map of attached mtp device async delegates.
-  AsyncDelegateMap async_delegate_map_;
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(MTPDeviceMapService);
-};
-
-}  // namespace fileapi
-
-#endif  // WEBKIT_FILEAPI_MEDIA_MTP_DEVICE_MAP_SERVICE_H_