Dispatch IndexedDB IPC messages to worker threads

content/renderer/indexed_db_message_filter.h

Index: content/renderer/indexed_db_message_filter.h
diff --git a/content/renderer/indexed_db_message_filter.h b/content/renderer/indexed_db_message_filter.h
new file mode 100644
index 0000000000000000000000000000000000000000..2302c66799b6f134fd19b5d364536a57c90fdd4f
--- /dev/null
+++ b/content/renderer/indexed_db_message_filter.h
@@ -0,0 +1,28 @@
+// Copyright (c) 2011 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_INDEXED_DB_MESSAGE_FILTER_H_
+#define CONTENT_RENDERER_INDEXED_DB_MESSAGE_FILTER_H_
+#pragma once
+
+#include "ipc/ipc_channel_proxy.h"
+
+class IndexedDBDispatcher;
+
+class IndexedDBMessageFilter : public IPC::ChannelProxy::MessageFilter {
+ public:
+  IndexedDBMessageFilter();
+  virtual ~IndexedDBMessageFilter();
+
+  // IPC::Channel::Listener implementation.
+  virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
+
+ private:
+  void DispatchMessage(const IPC::Message& msg);
+  scoped_refptr<base::MessageLoopProxy> main_thread_loop_proxy_;
+
+  DISALLOW_COPY_AND_ASSIGN(IndexedDBMessageFilter);
+};
+
+#endif  // CONTENT_RENDERER_INDEXED_DB_DISPATCHER_H_