Automated IWYU fix for TaskRunner includes.

media/mojo/services/android_mojo_media_client.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 MEDIA_MOJO_SERVICES_ANDROID_MOJO_MEDIA_CLIENT_H_
 #define MEDIA_MOJO_SERVICES_ANDROID_MOJO_MEDIA_CLIENT_H_
 
 #include <memory>
 
 #include "base/macros.h"
+#include "base/single_thread_task_runner.h"
 #include "media/mojo/services/mojo_media_client.h"
 
 namespace media {
 
 class AndroidMojoMediaClient : public MojoMediaClient {
  public:
   AndroidMojoMediaClient();
   ~AndroidMojoMediaClient() final;
 
   // MojoMediaClient implementation.
   std::unique_ptr<AudioDecoder> CreateAudioDecoder(
       scoped_refptr<base::SingleThreadTaskRunner> task_runner) final;
 
   std::unique_ptr<CdmFactory> CreateCdmFactory(
       service_manager::mojom::InterfaceProvider* host_interfaces) final;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AndroidMojoMediaClient);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_MOJO_SERVICES_ANDROID_MOJO_MEDIA_CLIENT_H_