Motown: Implement MediaTimelineController and use it.

services/media/factory_service/factory_service.h

 // Copyright 2016 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 MOJO_SERVICES_MEDIA_FACTORY_FACTORY_SERVICE_H_
 #define MOJO_SERVICES_MEDIA_FACTORY_FACTORY_SERVICE_H_
 
 #include "mojo/common/binding_set.h"
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
@@ skipping 28 matching lines @@
 
   void CreateDemux(InterfaceHandle<SeekingReader> reader,
                    InterfaceRequest<MediaDemux> demux) override;
 
   void CreateDecoder(MediaTypePtr input_media_type,
                      InterfaceRequest<MediaTypeConverter> decoder) override;
 
   void CreateNetworkReader(const String& url,
                            InterfaceRequest<SeekingReader> reader) override;
 
+  void CreateTimelineController(
+      InterfaceRequest<MediaTimelineController> timeline_controller) override;
+
  private:
   BindingSet<MediaFactory> bindings_;
 };
 
 }  // namespace media
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_MEDIA_FACTORY_FACTORY_SERVICE_H_