Reduce SuspendableObjects

third_party/WebKit/Source/modules/mediastream/MediaStreamTrack.h

 /*
  * 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
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR
  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT 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 MediaStreamTrack_h
 #define MediaStreamTrack_h
 
 #include "bindings/core/v8/ActiveScriptWrappable.h"
-#include "core/dom/SuspendableObject.h"
+#include "core/dom/ContextLifecycleObserver.h"
 #include "modules/EventTargetModules.h"
 #include "modules/ModulesExport.h"
 #include "platform/mediastream/MediaStreamDescriptor.h"
 #include "platform/mediastream/MediaStreamSource.h"
 #include "public/platform/WebMediaConstraints.h"
 #include "wtf/Forward.h"
 #include <memory>
 
 namespace blink {
 
 class AudioSourceProvider;
 class ExceptionState;
 class MediaTrackConstraints;
 class MediaStream;
 class MediaTrackSettings;
 
 class MODULES_EXPORT MediaStreamTrack
     : public EventTargetWithInlineData,
       public ActiveScriptWrappable<MediaStreamTrack>,
-      public SuspendableObject,
+      public ContextLifecycleObserver,
       public MediaStreamSource::Observer {
   USING_GARBAGE_COLLECTED_MIXIN(MediaStreamTrack);
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   static MediaStreamTrack* create(ExecutionContext*, MediaStreamComponent*);
   ~MediaStreamTrack() override;
 
   String kind() const;
   String id() const;
@@ skipping 31 matching lines @@
   void registerMediaStream(MediaStream*);
   void unregisterMediaStream(MediaStream*);
 
   // EventTarget
   const AtomicString& interfaceName() const override;
   ExecutionContext* getExecutionContext() const override;
 
   // ScriptWrappable
   bool hasPendingActivity() const final;
 
-  // SuspendableObject
+  // ContextLifecycleObserver
   void contextDestroyed() override;
 
   std::unique_ptr<AudioSourceProvider> createWebAudioSource();
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   friend class CanvasCaptureMediaStreamTrack;
 
   MediaStreamTrack(ExecutionContext*, MediaStreamComponent*);
 
   // MediaStreamSourceObserver
   void sourceChangedState() override;
 
   void propagateTrackEnded();
 
   MediaStreamSource::ReadyState m_readyState;
   HeapHashSet<Member<MediaStream>> m_registeredMediaStreams;
   bool m_isIteratingRegisteredMediaStreams;
   bool m_stopped;
   Member<MediaStreamComponent> m_component;
   WebMediaConstraints m_constraints;
 };
 
 typedef HeapVector<Member<MediaStreamTrack>> MediaStreamTrackVector;
 
 }  // namespace blink
 
 #endif  // MediaStreamTrack_h