Make the NaCl windows 64 bit binaries not depend on chrome targets.

chrome/nacl/broker_thread.h

-// 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 CHROME_NACL_BROKER_THREAD_H_
-#define CHROME_NACL_BROKER_THREAD_H_
-#pragma once
-
-#include "base/process.h"
-#include "chrome/common/nacl_types.h"
-#include "content/common/child_thread.h"
-
-#if defined(OS_WIN)
-#include "sandbox/src/sandbox.h"
-#endif
-
-// The BrokerThread class represents the thread that handles the messages from
-// the browser process and starts NaCl loader processes.
-class NaClBrokerThread : public ChildThread {
- public:
-  NaClBrokerThread();
-  ~NaClBrokerThread();
-  // Returns the one NaCl thread.
-  static NaClBrokerThread* current();
-
-  // IPC::Channel::Listener implementation.
-  virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
-
- private:
-  virtual bool OnControlMessageReceived(const IPC::Message& msg);
-  void OnLaunchLoaderThroughBroker(const std::wstring& loader_channel_id);
-  void OnShareBrowserHandle(int browser_handle);
-  void OnStopBroker();
-
-  base::ProcessHandle browser_handle_;
-  sandbox::BrokerServices* broker_services_;
-
-  DISALLOW_COPY_AND_ASSIGN(NaClBrokerThread);
-};
-
-#endif  // CHROME_NACL_BROKER_THREAD_H_