Pull domstorage specifics out of RenderThreadImpl into DomStorageDispatcher

content/renderer/dom_storage/dom_storage_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_RENDERER_DOM_STORAGE_DOM_STORAGE_DISPATCHER_H_
+#define CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_DISPATCHER_H_
+#pragma once
+
+#include "ipc/ipc_channel.h"
+
+struct DOMStorageMsg_Event_Params;
+
+// Dispatches DomStorage related messages sent to a renderer process from the
+// main browser process. There is one instance per child process. Messages
+// are dispatched on the main renderer thread. The RenderThreadImpl
+// creates an instance and delegates calls to it.
+class DomStorageDispatcher : public IPC::Channel::Listener {
+ public:
+  DomStorageDispatcher() {}
+
+  // IPC::Channel::Listener implementation
+  virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
+
+ private:
+  // IPC message handlers
+  void OnStorageEvent(const DOMStorageMsg_Event_Params& params);
+};
+
+#endif  // CONTENT_RENDERER_DOM_STORAGE_DOM_STORAGE_DISPATCHER_H_