Support file utilities and mime-related methods on workers.

chrome/browser/renderer_host/file_utilities_dispatcher_host.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_BROWSER_RENDERER_HOST_FILE_UTILITIES_DISPATCHER_HOST_H_
+#define CHROME_BROWSER_RENDERER_HOST_FILE_UTILITIES_DISPATCHER_HOST_H_
+
+#include "base/basictypes.h"
+#include "base/file_path.h"
+#include "base/process.h"
+#include "base/ref_counted.h"
+#include "ipc/ipc_message.h"
+
+namespace base {
+struct PlatformFileInfo;
+}
+
+namespace IPC {
+class Message;
+}
+
+class FileUtilitiesDispatcherHost
+    : public base::RefCountedThreadSafe<FileUtilitiesDispatcherHost> {
+ public:
+  FileUtilitiesDispatcherHost(IPC::Message::Sender* sender, int process_id);
+  void Init(base::ProcessHandle process_handle);
+  void Shutdown();
+  bool OnMessageReceived(const IPC::Message& message, bool* msg_is_ok);
+
+  void Send(IPC::Message* message);
+
+ private:
+  friend class base::RefCountedThreadSafe<FileUtilitiesDispatcherHost>;
+  ~FileUtilitiesDispatcherHost();
+
+  typedef void (*FileInfoWriteFunc)(IPC::Message* reply_msg,
+                                    const base::PlatformFileInfo& file_info);
+
+  void OnGetFileSize(const FilePath& path, IPC::Message* reply_msg);
+  void OnGetFileModificationTime(const FilePath& path, IPC::Message* reply_msg);
+  void OnGetFileInfoOnFileThread(const FilePath& path,
+                                 IPC::Message* reply_msg,
+                                 FileInfoWriteFunc write_func);
+  void OnOpenFile(const FilePath& path, int mode,IPC::Message* reply_msg);
+  void OnOpenFileOnFileThread(const FilePath& path,
+                              int mode,
+                              IPC::Message* reply_msg);
+
+  // The sender to be used for sending out IPC messages.
+  IPC::Message::Sender* message_sender_;
+
+  // The ID of this process.
+  int process_id_;
+
+  // The handle of this process.
+  base::ProcessHandle process_handle_;
+
+  bool shutdown_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(FileUtilitiesDispatcherHost);
+};
+
+#endif  // CHROME_BROWSER_RENDERER_HOST_FILE_UTILITIES_DISPATCHER_HOST_H_