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

third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.h

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
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  *    notice, this list of conditions and the following disclaimer.
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  * 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
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  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 #ifndef AbstractAudioContext_h
 #define AbstractAudioContext_h
 
+#include "bindings/core/v8/ActiveScriptWrappable.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/dom/DOMTypedArray.h"
 #include "core/events/EventListener.h"
 #include "modules/EventTargetModules.h"
 #include "modules/ModulesExport.h"
 #include "modules/webaudio/AsyncAudioDecoder.h"
 #include "modules/webaudio/AudioDestinationNode.h"
 #include "modules/webaudio/DeferredTaskHandler.h"
@@ skipping 36 matching lines @@
 class ScriptProcessorNode;
 class ScriptPromiseResolver;
 class ScriptState;
 class SecurityOrigin;
 class StereoPannerNode;
 class WaveShaperNode;
 
 // AbstractAudioContext is the cornerstone of the web audio API and all AudioNodes are created from it.
 // For thread safety between the audio thread and the main thread, it has a rendering graph locking mechanism.
 
-class MODULES_EXPORT AbstractAudioContext : public RefCountedGarbageCollectedEventTargetWithInlineData<AbstractAudioContext>, public ActiveDOMObject {
+class MODULES_EXPORT AbstractAudioContext : public RefCountedGarbageCollectedEventTargetWithInlineData<AbstractAudioContext>, public ActiveScriptWrappable, public ActiveDOMObject {
     REFCOUNTED_GARBAGE_COLLECTED_EVENT_TARGET(AbstractAudioContext);
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(AbstractAudioContext);
     DEFINE_WRAPPERTYPEINFO();
 public:
     // The state of an audio context.  On creation, the state is Suspended. The state is Running if
     // audio is being processed (audio graph is being pulled for data). The state is Closed if the
     // audio context has been closed.  The valid transitions are from Suspended to either Running or
     // Closed; Running to Suspended or Closed. Once Closed, there are no valid transitions.
     enum AudioContextState {
         Suspended,
@@ skipping 10 matching lines @@
 
     // Is the destination node initialized and ready to handle audio?
     bool isDestinationInitialized() const
     {
         AudioDestinationNode* dest = destination();
         return dest ? dest->audioDestinationHandler().isInitialized() : false;
     }
 
     // Document notification
     void stop() final;
-    bool hasPendingActivity() const override;
+    bool hasPendingActivity() const final;
 
     AudioDestinationNode* destination() const { return m_destinationNode.get(); }
 
     size_t currentSampleFrame() const
     {
         return m_destinationNode ? m_destinationNode->audioDestinationHandler().currentSampleFrame() : 0;
     }
 
     double currentTime() const
     {
@@ skipping 222 matching lines @@
     Member<PeriodicWave> m_periodicWaveTriangle;
 
     // This is considering 32 is large enough for multiple channels audio.
     // It is somewhat arbitrary and could be increased if necessary.
     enum { MaxNumberOfChannels = 32 };
 };
 
 } // namespace blink
 
 #endif // AbstractAudioContext_h