Revert 175073 because it fails to compile on Linux.

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 <string>
-#include <vector>
-
-#include "base/callback.h"
-#include "build/build_config.h"
-
-#if !defined(OS_LINUX)
-#error "Only used on Linux and ChromeOS"
-#endif
-
-class MtpFileEntry;
-class MtpStorageInfo;
-
-namespace device {
-
-// This class handles the interaction with mtpd.
-// Other classes can add themselves as observers.
-class MediaTransferProtocolManager {
- public:
-  // A callback to handle the result of OpenStorage.
-  // The first argument is the returned handle.
-  // The second argument is true if there was an error.
-  typedef base::Callback<void(const std::string& handle,
-                              bool error)> OpenStorageCallback;
-
-  // A callback to handle the result of CloseStorage.
-  // The argument is true if there was an error.
-  typedef base::Callback<void(bool error)> CloseStorageCallback;
-
-  // A callback to handle the result of ReadDirectoryByPath/Id.
-  // The first argument is a vector of file entries.
-  // The second argument is true if there was an error.
-  typedef base::Callback<void(const std::vector<MtpFileEntry>& file_entries,
-                              bool error)> ReadDirectoryCallback;
-
-  // A callback to handle the result of ReadFileChunkByPath/Id.
-  // The first argument is a string containing the file data.
-  // The second argument is true if there was an error.
-  typedef base::Callback<void(const std::string& data,
-                              bool error)> ReadFileCallback;
-
-  // A callback to handle the result of GetFileInfoByPath/Id.
-  // The first argument is a file entry.
-  // The second argument is true if there was an error.
-  typedef base::Callback<void(const MtpFileEntry& file_entry,
-                              bool error)> GetFileInfoCallback;
-
-  // Implement this interface to be notified about MTP storage
-  // attachment / detachment events.
-  class Observer {
-   public:
-    virtual ~Observer() {}
-
-    // A function called after a MTP storage has been attached / detached.
-    virtual void StorageChanged(bool is_attached,
-                                const std::string& storage_name) = 0;
-  };
-
-  virtual ~MediaTransferProtocolManager() {}
-
-  // Adds an observer.
-  virtual void AddObserver(Observer* observer) = 0;
-
-  // Removes an observer.
-  virtual void RemoveObserver(Observer* observer) = 0;
-
-  // Returns a vector of available MTP storages.
-  virtual const std::vector<std::string> GetStorages() const = 0;
-
-  // On success, returns the the metadata for |storage_name|.
-  // Otherwise returns NULL.
-  virtual const MtpStorageInfo* GetStorageInfo(
-      const std::string& storage_name) const = 0;
-
-  // Opens |storage_name| in |mode| and runs |callback|.
-  virtual void OpenStorage(const std::string& storage_name,
-                           const std::string& mode,
-                           const OpenStorageCallback& callback) = 0;
-
-  // Close |storage_handle| and runs |callback|.
-  virtual void CloseStorage(const std::string& storage_handle,
-                            const CloseStorageCallback& callback) = 0;
-
-  // Reads directory entries from |path| on |storage_handle| and runs
-  // |callback|.
-  virtual void ReadDirectoryByPath(const std::string& storage_handle,
-                                   const std::string& path,
-                                   const ReadDirectoryCallback& callback) = 0;
-
-  // Reads directory entries from |file_id| on |storage_handle| and runs
-  // |callback|.
-  virtual void ReadDirectoryById(const std::string& storage_handle,
-                                 uint32 file_id,
-                                 const ReadDirectoryCallback& callback) = 0;
-
-  // Reads file data from |path| on |storage_handle| and runs |callback|.
-  // Reads |count| bytes of data starting at |offset|.
-  virtual void ReadFileChunkByPath(const std::string& storage_handle,
-                                   const std::string& path,
-                                   uint32 offset,
-                                   uint32 count,
-                                   const ReadFileCallback& callback) = 0;
-
-  // Reads file data from |file_id| on |storage_handle| and runs |callback|.
-  // Reads |count| bytes of data starting at |offset|.
-  virtual void ReadFileChunkById(const std::string& storage_handle,
-                                 uint32 file_id,
-                                 uint32 offset,
-                                 uint32 count,
-                                 const ReadFileCallback& callback) = 0;
-
-  // Gets the file metadata for |path| on |storage_handle| and runs |callback|.
-  virtual void GetFileInfoByPath(const std::string& storage_handle,
-                                 const std::string& path,
-                                 const GetFileInfoCallback& callback) = 0;
-
-  // Gets the file metadata for |file_id| on |storage_handle| and runs
-  // |callback|.
-  virtual void GetFileInfoById(const std::string& storage_handle,
-                               uint32 file_id,
-                               const GetFileInfoCallback& callback) = 0;
-
-  // Creates the global MediaTransferProtocolManager instance.
-  static void Initialize();
-
-  // Destroys the global MediaTransferProtocolManager instance if it exists.
-  static void Shutdown();
-
-  // Returns a pointer to the global MediaTransferProtocolManager instance.
-  // Initialize() should already have been called.
-  static MediaTransferProtocolManager* GetInstance();
-};
-
-}  // namespace device
-
-#endif  // DEVICE_MEDIA_TRANSFER_PROTOCOL_MEDIA_TRANSFER_PROTOCOL_MANAGER_H_