ActiveScriptWrappable: GC wrappers in detached ExecutionContexts.

third_party/WebKit/Source/modules/mediasource/SourceBuffer.h

 /*
  * 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 36 matching lines @@
 class DOMArrayBuffer;
 class DOMArrayBufferView;
 class ExceptionState;
 class GenericEventQueue;
 class MediaSource;
 class TimeRanges;
 class VideoTrackList;
 class WebSourceBuffer;
 
 class SourceBuffer final : public EventTargetWithInlineData,
-                           public ActiveScriptWrappable,
+                           public ActiveScriptWrappable<SourceBuffer>,
                            public SuspendableObject,
                            public WebSourceBufferClient {
   USING_GARBAGE_COLLECTED_MIXIN(SourceBuffer);
   DEFINE_WRAPPERTYPEINFO();
   USING_PRE_FINALIZER(SourceBuffer, dispose);
 
  public:
   static SourceBuffer* create(std::unique_ptr<WebSourceBuffer>,
                               MediaSource*,
                               GenericEventQueue*);
@@ skipping 100 matching lines @@
   Member<AsyncMethodRunner<SourceBuffer>> m_appendBufferAsyncPartRunner;
 
   double m_pendingRemoveStart;
   double m_pendingRemoveEnd;
   Member<AsyncMethodRunner<SourceBuffer>> m_removeAsyncPartRunner;
 };
 
 }  // namespace blink
 
 #endif  // SourceBuffer_h