Reland of Move ScriptState::GetExecutionContext (Part 5)

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 193 matching lines @@
   MediaStreamCenter::Instance().DidStopMediaStreamTrack(Component());
   DispatchEvent(Event::Create(EventTypeNames::ended));
   PropagateTrackEnded();
 }
 
 MediaStreamTrack* MediaStreamTrack::clone(ScriptState* script_state) {
   // TODO(pbos): Make sure m_readyState and m_stopped carries over on cloned
   // tracks.
   MediaStreamComponent* cloned_component = Component()->Clone();
   MediaStreamTrack* cloned_track = MediaStreamTrack::Create(
-      script_state->GetExecutionContext(), cloned_component);
+      ExecutionContext::From(script_state), cloned_component);
   MediaStreamCenter::Instance().DidCloneMediaStreamTrack(Component(),
                                                          cloned_component);
   return cloned_track;
 }
 
 void MediaStreamTrack::SetConstraints(const WebMediaConstraints& constraints) {
   constraints_ = constraints;
 }
 
 void MediaStreamTrack::getCapabilities(MediaTrackCapabilities& capabilities) {
@@ skipping 184 matching lines @@
 
 DEFINE_TRACE(MediaStreamTrack) {
   visitor->Trace(registered_media_streams_);
   visitor->Trace(component_);
   visitor->Trace(image_capture_);
   EventTargetWithInlineData::Trace(visitor);
   ContextLifecycleObserver::Trace(visitor);
 }
 
 }  // namespace blink