ActiveScriptWrappable: GC wrappers in detached ExecutionContexts.

third_party/WebKit/Source/modules/mediasource/MediaSource.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 95 matching lines @@
   return ended;
 }
 
 MediaSource* MediaSource::create(ExecutionContext* context) {
   MediaSource* mediaSource = new MediaSource(context);
   mediaSource->suspendIfNeeded();
   return mediaSource;
 }
 
 MediaSource::MediaSource(ExecutionContext* context)
-    : ActiveScriptWrappable(this),
+    : ActiveScriptWrappable<MediaSource>(this),
       SuspendableObject(context),
       m_readyState(closedKeyword()),
       m_asyncEventQueue(GenericEventQueue::create(this)),
       m_attachedElement(nullptr),
       m_sourceBuffers(SourceBufferList::create(getExecutionContext(),
                                                m_asyncEventQueue.get())),
       m_activeSourceBuffers(SourceBufferList::create(getExecutionContext(),
                                                      m_asyncEventQueue.get())),
       m_liveSeekableRange(TimeRanges::create()),
       m_addedToRegistryCounter(0) {
@@ skipping 688 matching lines @@
   event->setTarget(this);
 
   m_asyncEventQueue->enqueueEvent(event);
 }
 
 URLRegistry& MediaSource::registry() const {
   return MediaSourceRegistry::registry();
 }
 
 }  // namespace blink