Move a bunch of html5 renderer code to content.

chrome/renderer/cookie_message_filter.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_RENDERER_COOKIE_MESSAGE_FILTER_H_
-#define CHROME_RENDERER_COOKIE_MESSAGE_FILTER_H_
-#pragma once
-
-#include "base/synchronization/waitable_event.h"
-#include "ipc/ipc_channel_proxy.h"
-
-// This class maintains a WaitableEvent that is signaled when an IPC to query
-// cookies from the browser should pump events.  Pumping events may be
-// necessary to avoid deadlocks if the browser blocks the cookie query on a
-// user prompt.
-class CookieMessageFilter : public IPC::ChannelProxy::MessageFilter {
- public:
-  CookieMessageFilter();
-
-  base::WaitableEvent* pump_messages_event() { return &event_; }
-  void ResetPumpMessagesEvent() { event_.Reset(); }
-
- private:
-  // IPC::ChannelProxy::MessageFilter implementation:
-  virtual bool OnMessageReceived(const IPC::Message& message);
-
-  base::WaitableEvent event_;
-};
-
-#endif  // CHROME_RENDERER_COOKIE_MESSAGE_FILTER_H_