Clone MediaStream video tracks correctly with spec-compliant constraints.

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 198 matching lines @@
   dispatchEvent(Event::create(EventTypeNames::ended));
   propagateTrackEnded();
 }
 
 MediaStreamTrack* MediaStreamTrack::clone(ScriptState* scriptState) {
   // TODO(pbos): Make sure m_readyState and m_stopped carries over on cloned
   // tracks.
   MediaStreamComponent* clonedComponent = component()->clone();
   MediaStreamTrack* clonedTrack = MediaStreamTrack::create(
       scriptState->getExecutionContext(), clonedComponent);
-  MediaStreamCenter::instance().didCreateMediaStreamTrack(clonedComponent);
+  MediaStreamCenter::instance().didCloneMediaStreamTrack(component(),
+                                                         clonedComponent);
   return clonedTrack;
 }
 
 void MediaStreamTrack::setConstraints(const WebMediaConstraints& constraints) {
   m_constraints = constraints;
 }
 
 void MediaStreamTrack::getCapabilities(MediaTrackCapabilities& capabilities) {
   if (m_imageCapture)
     capabilities = m_imageCapture->getMediaTrackCapabilities();
@@ skipping 182 matching lines @@
 
 DEFINE_TRACE(MediaStreamTrack) {
   visitor->trace(m_registeredMediaStreams);
   visitor->trace(m_component);
   visitor->trace(m_imageCapture);
   EventTargetWithInlineData::trace(visitor);
   ContextLifecycleObserver::trace(visitor);
 }
 
 }  // namespace blink