Motown: Get rid of speculative clock definition

services/media/factory_service/media_sink_impl.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_MEDIA_SINK_IMPL_H_
 #define MOJO_SERVICES_MEDIA_FACTORY_MEDIA_SINK_IMPL_H_
 
 #include <deque>
 #include <memory>
 
@@ skipping 18 matching lines @@
  public:
   static std::shared_ptr<MediaSinkImpl> Create(
       const String& destination_url,
       MediaTypePtr media_type,
       InterfaceRequest<MediaSink> request,
       MediaFactoryService* owner);
 
   ~MediaSinkImpl() override;
 
   // MediaSink implementation.
-  void GetClockDisposition(
-      const GetClockDispositionCallback& callback) override;
-
-  void GetMasterClock(InterfaceRequest<Clock> master_clock) override;
-
-  void SetMasterClock(InterfaceHandle<Clock> master_clock) override;
-
   void GetConsumer(InterfaceRequest<MediaConsumer> consumer) override;
 
   void GetStatus(uint64_t version_last_seen,
                  const GetStatusCallback& callback) override;
 
   void Play() override;
 
   void Pause() override;
 
  private:
@@ skipping 27 matching lines @@
   TimelineTransformPtr status_transform_;
   std::deque<GetStatusCallback> pending_status_requests_;
   uint32_t frames_per_second_ = 0u;
   bool flushed_ = true;
 };
 
 }  // namespace media
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_MEDIA_FACTORY_MEDIA_SINK_IMPL_H_