Motown: Add ActiveMultistreamSource model in preparation for the ffmpeg demux with async I/O

services/media/framework/graph.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 SERVICES_MEDIA_FRAMEWORK_GRAPH_H_
 #define SERVICES_MEDIA_FRAMEWORK_GRAPH_H_
 
 #include <list>
 
 #include "services/media/framework/engine.h"
 #include "services/media/framework/refs.h"
+#include "services/media/framework/stages/active_multistream_source_stage.h"
 #include "services/media/framework/stages/active_sink_stage.h"
 #include "services/media/framework/stages/active_source_stage.h"
 #include "services/media/framework/stages/multistream_source_stage.h"
 #include "services/media/framework/stages/stage.h"
 #include "services/media/framework/stages/transform_stage.h"
 
 namespace mojo {
 namespace media {
 
 namespace {
@@ skipping 11 matching lines @@
    public:                                                                   \
     static inline Stage* Create(std::shared_ptr<T> t_ptr) {                  \
       return new TStage(std::shared_ptr<TModel>(t_ptr));                     \
     }                                                                        \
   };
 
 DEFINE_STAGE_CREATOR(MultistreamSource, MultistreamSourceStage);
 DEFINE_STAGE_CREATOR(Transform, TransformStage);
 DEFINE_STAGE_CREATOR(ActiveSource, ActiveSourceStage);
 DEFINE_STAGE_CREATOR(ActiveSink, ActiveSinkStage);
+DEFINE_STAGE_CREATOR(ActiveMultistreamSource, ActiveMultistreamSourceStage);
 
 #undef DEFINE_STAGE_CREATOR
 
 }  // namespace
 
 //
 // USAGE
 //
 // Graph is a container for sources, sinks and transforms ('parts') connected
 // in a graph. PartRef, InputRef and OutputRef are all
@@ skipping 147 matching lines @@
   std::list<Stage*> sinks_;
 
   Engine engine_;
   Stage::UpdateCallback update_function_;
 };
 
 }  // namespace media
 }  // namespace mojo
 
 #endif  // SERVICES_MEDIA_FRAMEWORK_GRAPH_H_