Automated IWYU fix for TaskRunner includes.

remoting/host/single_window_desktop_environment.h

 // Copyright 2014 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 REMOTING_HOST_SINGLE_WINDOW_DESKTOP_ENVIRONMENT_H_
 #define REMOTING_HOST_SINGLE_WINDOW_DESKTOP_ENVIRONMENT_H_
 
 #include "base/macros.h"
+#include "base/single_thread_task_runner.h"
 #include "remoting/host/basic_desktop_environment.h"
 #include "third_party/webrtc/modules/desktop_capture/desktop_capture_types.h"
 
 namespace remoting {
 
 // Passed to the ChromotingHost to remote an individual window's contents,
 // rather than a whole desktop.
 class SingleWindowDesktopEnvironmentFactory
     : public BasicDesktopEnvironmentFactory {
  public:
@@ skipping 12 matching lines @@
 
  private:
   webrtc::WindowId window_id_;
 
   DISALLOW_COPY_AND_ASSIGN(SingleWindowDesktopEnvironmentFactory);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_SINGLE_WINDOW_DESKTOP_ENVIRONMENT_H_