Add Worker support for FileSystem API.

chrome/common/file_system/file_system_dispatcher.h

 // Copyright (c) 2010 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_COMMON_FILE_SYSTEM_FILE_SYSTEM_DISPATCHER_H_
 #define CHROME_COMMON_FILE_SYSTEM_FILE_SYSTEM_DISPATCHER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/file_util_proxy.h"
 #include "base/id_map.h"
-#include "base/nullable_string16.h"
-#include "googleurl/src/gurl.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_message.h"
 #include "webkit/fileapi/file_system_callback_dispatcher.h"
+#include "webkit/fileapi/file_system_types.h"
 
 namespace base {
 struct PlatformFileInfo;
 }
 
 class FilePath;
+class GURL;
 
 // Dispatches and sends file system related messages sent to/from a child
 // process from/to the main browser process.  There is one instance
 // per child process.  Messages are dispatched on the main child thread.
 class FileSystemDispatcher {
  public:
   FileSystemDispatcher();
   ~FileSystemDispatcher();
 
   bool OnMessageReceived(const IPC::Message& msg);
 
+  void OpenFileSystem(const GURL& origin_url,
+                      fileapi::FileSystemType type,
+                      long long size,
+                      fileapi::FileSystemCallbackDispatcher* dispatcher);
   bool Move(const FilePath& src_path,
             const FilePath& dest_path,
             fileapi::FileSystemCallbackDispatcher* dispatcher);
   bool Copy(const FilePath& src_path,
             const FilePath& dest_path,
             fileapi::FileSystemCallbackDispatcher* dispatcher);
   bool Remove(const FilePath& path,
               fileapi::FileSystemCallbackDispatcher* dispatcher);
   bool ReadMetadata(const FilePath& path,
                     fileapi::FileSystemCallbackDispatcher* dispatcher);
   bool Create(const FilePath& path,
               bool exclusive,
               bool is_directory,
               bool recursive,
               fileapi::FileSystemCallbackDispatcher* dispatcher);
   bool Exists(const FilePath& path,
               bool for_directory,
               fileapi::FileSystemCallbackDispatcher* dispatcher);
   bool ReadDirectory(const FilePath& path,
                      fileapi::FileSystemCallbackDispatcher* dispatcher);
 
  private:
+  // Message handler for OpenFileSystem.
+  void OnOpenFileSystemRequestComplete(
+      int request_id,
+      bool accepted,
+      const std::string& name,
+      const FilePath& root_path);
+
+  // Message handlers for regular file system operations.
   void DidSucceed(int request_id);
   void DidReadMetadata(int request_id,
                        const base::PlatformFileInfo& file_info);
   void DidReadDirectory(
       int request_id,
       const std::vector<base::file_util_proxy::Entry>& entries,
       bool has_more);
   void DidFail(int request_id, base::PlatformFileError error_code);
 
   IDMap<fileapi::FileSystemCallbackDispatcher, IDMapOwnPointer> dispatchers_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemDispatcher);
 };
 
 #endif  // CHROME_COMMON_FILE_SYSTEM_FILE_SYSTEM_DISPATCHER_H_