[FileAPI] Add file open ID and close callback

content/common/fileapi/file_system_dispatcher.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 CONTENT_COMMON_FILEAPI_FILE_SYSTEM_DISPATCHER_H_
 #define CONTENT_COMMON_FILEAPI_FILE_SYSTEM_DISPATCHER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 72 matching lines @@
                  const base::Time& last_modified_time,
                  fileapi::FileSystemCallbackDispatcher* dispatcher);
 
   // This returns a raw open PlatformFile, unlike the above, which are
   // self-contained operations.
   bool OpenFile(const GURL& file_path,
                 int file_flags,  // passed to FileUtilProxy::CreateOrOpen
                 fileapi::FileSystemCallbackDispatcher* dispatcher);
   // This must be paired with OpenFile, and called after finished using the
   // raw PlatformFile returned from OpenFile.
-  bool NotifyCloseFile(const GURL& file_path);
+  bool NotifyCloseFile(int file_open_id);
 
   bool CreateSnapshotFile(const GURL& file_path,
                           fileapi::FileSystemCallbackDispatcher* dispatcher);
 
  private:
   // Message handlers.
   void OnDidOpenFileSystem(int request_id,
                            const std::string& name,
                            const GURL& root);
   void OnDidSucceed(int request_id);
   void OnDidReadMetadata(int request_id,
                          const base::PlatformFileInfo& file_info,
                          const base::FilePath& platform_path);
   void OnDidCreateSnapshotFile(int request_id,
                                const base::PlatformFileInfo& file_info,
                                const base::FilePath& platform_path);
   void OnDidReadDirectory(
       int request_id,
       const std::vector<base::FileUtilProxy::Entry>& entries,
       bool has_more);
   void OnDidFail(int request_id, base::PlatformFileError error_code);
   void OnDidWrite(int request_id, int64 bytes, bool complete);
   void OnDidOpenFile(
       int request_id,
       IPC::PlatformFileForTransit file,
+      int file_open_id,
       quota::QuotaLimitType quota_policy);
 
   IDMap<fileapi::FileSystemCallbackDispatcher, IDMapOwnPointer> dispatchers_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemDispatcher);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_FILEAPI_FILE_SYSTEM_DISPATCHER_H_