Implement DeleteFile and DeleteDirectory.

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>
 
@@ skipping 45 matching lines @@
   // A callback to handle the result of GetFileInfo.
   // 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;
 
   // A callback to handle the result of CopyFileFromLocal.
   // The first argument is true if there was an error.
   typedef base::Callback<void(bool error)> CopyFileFromLocalCallback;
 
+  // A callback to handle the result of DeleteObject.
+  // The first argument is true if there was an error.
+  typedef base::Callback<void(bool error)> DeleteObjectCallback;
+
   // 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;
   };
@@ skipping 17 matching lines @@
   // 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 |file_id| on |storage_handle| and runs
-  // |callback|.
+  // |callback|. |max_size| is a maximum number of files to be read.
   virtual void ReadDirectory(const std::string& storage_handle,
-                             uint32 file_id,
+                             const uint32 file_id,
+                             const size_t max_size,
                              const ReadDirectoryCallback& callback) = 0;
 
   // Reads file data from |file_id| on |storage_handle| and runs |callback|.
   // Reads |count| bytes of data starting at |offset|.
   virtual void ReadFileChunk(const std::string& storage_handle,
                              uint32 file_id,
                              uint32 offset,
                              uint32 count,
                              const ReadFileCallback& callback) = 0;
 
   // Gets the file metadata for |file_id| on |storage_handle| and runs
   // |callback|.
   virtual void GetFileInfo(const std::string& storage_handle,
                            uint32 file_id,
                            const GetFileInfoCallback& callback) = 0;
 
   // Copies the file from |source_file_descriptor| to |file_name| on
   // |parent_id|.
   virtual void CopyFileFromLocal(const std::string& storage_handle,
                                  const int source_file_descriptor,
                                  const uint32 parent_id,
                                  const std::string& file_name,
                                  const CopyFileFromLocalCallback& callback) = 0;
 
+  // Deletes |object_id|.
+  virtual void DeleteObject(const std::string& storage_handle,
+                            const uint32 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.
   static MediaTransferProtocolManager* Initialize(
       scoped_refptr<base::SequencedTaskRunner> task_runner);
 };
 
 }  // namespace device
 
 #endif  // DEVICE_MEDIA_TRANSFER_PROTOCOL_MEDIA_TRANSFER_PROTOCOL_MANAGER_H_