[v8 gc] Introduce a base class for all objects that can have pending activity

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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef SourceBuffer_h
 #define SourceBuffer_h
 
+#include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/fileapi/FileReaderLoaderClient.h"
 #include "modules/EventTargetModules.h"
 #include "modules/mediasource/TrackDefaultList.h"
 #include "platform/AsyncMethodRunner.h"
 #include "platform/weborigin/KURL.h"
 #include "public/platform/WebSourceBufferClient.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class DOMArrayBuffer;
 class DOMArrayBufferView;
 class ExceptionState;
 class FileReaderLoader;
 class GenericEventQueue;
 class MediaSource;
 class Stream;
 class TimeRanges;
 class WebSourceBuffer;
 
 class SourceBuffer final
     : public RefCountedGarbageCollectedEventTargetWithInlineData<SourceBuffer>
+    , public ActiveScriptWrappable
     , public ActiveDOMObject
     , public FileReaderLoaderClient
     , public WebSourceBufferClient {
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(SourceBuffer);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SourceBuffer);
     DEFINE_WRAPPERTYPEINFO();
 public:
     static SourceBuffer* create(PassOwnPtr<WebSourceBuffer>, MediaSource*, GenericEventQueue*);
     static const AtomicString& segmentsKeyword();
     static const AtomicString& sequenceKeyword();
@@ skipping 16 matching lines @@
     double appendWindowStart() const;
     void setAppendWindowStart(double, ExceptionState&);
     double appendWindowEnd() const;
     void setAppendWindowEnd(double, ExceptionState&);
     TrackDefaultList* trackDefaults() const { return m_trackDefaults.get(); }
     void setTrackDefaults(TrackDefaultList*, ExceptionState&);
 
     void abortIfUpdating();
     void removedFromMediaSource();
 
+    // ActiveScriptWrappable
+    bool hasPendingActivity() const final;
+
     // ActiveDOMObject interface
-    bool hasPendingActivity() const override;
     void suspend() override;
     void resume() override;
     void stop() override;
 
     // EventTarget interface
     ExecutionContext* getExecutionContext() const override;
     const AtomicString& interfaceName() const override;
 
     // WebSourceBufferClient interface
     void initializationSegmentReceived() override;
@@ skipping 50 matching lines @@
     bool m_streamMaxSizeValid;
     unsigned long long m_streamMaxSize;
     Member<AsyncMethodRunner<SourceBuffer>> m_appendStreamAsyncPartRunner;
     Member<Stream> m_stream;
     OwnPtr<FileReaderLoader> m_loader;
 };
 
 } // namespace blink
 
 #endif // SourceBuffer_h