Remove ChromotingHostContext from DnsBlackholeChecker.

remoting/host/desktop_environment.cc

 // 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.
 
 #include "remoting/host/desktop_environment.h"
 
 #include "base/compiler_specific.h"
 #include "remoting/host/audio_capturer.h"
-#include "remoting/host/chromoting_host_context.h"
 #include "remoting/host/desktop_environment.h"
 #include "remoting/host/event_executor.h"
 #include "remoting/host/video_frame_capturer.h"
 
 namespace remoting {
 
 DesktopEnvironment::DesktopEnvironment(
     scoped_ptr<AudioCapturer> audio_capturer,
     scoped_ptr<EventExecutor> event_executor,
     scoped_ptr<VideoFrameCapturer> video_capturer)
     : audio_capturer_(audio_capturer.Pass()),
       event_executor_(event_executor.Pass()),
       video_capturer_(video_capturer.Pass()) {
 }
 
 DesktopEnvironment::~DesktopEnvironment() {
   event_executor_.release()->StopAndDelete();
 }
 
 void DesktopEnvironment::Start(
     scoped_ptr<protocol::ClipboardStub> client_clipboard) {
   event_executor_->Start(client_clipboard.Pass());
 }
 
 }  // namespace remoting