Reland of Move ScriptState::GetExecutionContext (Part 5)

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

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2011, 2012 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 260 matching lines @@
        iter != video_tracks_.end(); ++iter) {
     if ((*iter)->id() == id)
       return iter->Get();
   }
 
   return 0;
 }
 
 MediaStream* MediaStream::clone(ScriptState* script_state) {
   MediaStreamTrackVector tracks;
-  ExecutionContext* context = script_state->GetExecutionContext();
+  ExecutionContext* context = ExecutionContext::From(script_state);
   for (MediaStreamTrackVector::iterator iter = audio_tracks_.begin();
        iter != audio_tracks_.end(); ++iter)
     tracks.push_back((*iter)->clone(script_state));
   for (MediaStreamTrackVector::iterator iter = video_tracks_.begin();
        iter != video_tracks_.end(); ++iter)
     tracks.push_back((*iter)->clone(script_state));
   return MediaStream::Create(context, tracks);
 }
 
 void MediaStream::TrackEnded() {
@@ skipping 139 matching lines @@
   EventTargetWithInlineData::Trace(visitor);
   ContextClient::Trace(visitor);
   MediaStreamDescriptorClient::Trace(visitor);
 }
 
 MediaStream* ToMediaStream(MediaStreamDescriptor* descriptor) {
   return static_cast<MediaStream*>(descriptor->Client());
 }
 
 }  // namespace blink