Carry MediaStreamComponent properties on clone.

third_party/WebKit/Source/modules/mediastream/MediaStreamTrack.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2011 Ericsson AB. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 121 matching lines @@
   if (ended())
     return;
 
   m_readyState = MediaStreamSource::ReadyStateEnded;
   MediaStreamCenter::instance().didStopMediaStreamTrack(component());
   dispatchEvent(Event::create(EventTypeNames::ended));
   propagateTrackEnded();
 }
 
 MediaStreamTrack* MediaStreamTrack::clone(ExecutionContext* context) {
-  MediaStreamComponent* clonedComponent =
-      MediaStreamComponent::create(component()->source());
+  // TODO(pbos): Make sure m_readyState and m_stopped carries over on cloned
+  // tracks.
+  MediaStreamComponent* clonedComponent = component()->clone();
   MediaStreamTrack* clonedTrack =
       MediaStreamTrack::create(context, clonedComponent);
   MediaStreamCenter::instance().didCreateMediaStreamTrack(clonedComponent);
   return clonedTrack;
 }
 
 void MediaStreamTrack::getConstraints(MediaTrackConstraints& constraints) {
   MediaConstraintsImpl::convertConstraints(m_constraints, constraints);
 }
 
@@ skipping 99 matching lines @@
 }
 
 DEFINE_TRACE(MediaStreamTrack) {
   visitor->trace(m_registeredMediaStreams);
   visitor->trace(m_component);
   EventTargetWithInlineData::trace(visitor);
   ActiveDOMObject::trace(visitor);
 }
 
 }  // namespace blink