Web Audio: Unapply Oilpan to AudioSummingJunction.

Source/modules/webaudio/AudioContext.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
  * 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
@@ skipping 278 matching lines @@
 
     // Called at the start of each render quantum.
     void handlePreRenderTasks();
 
     // Called at the end of each render quantum.
     void handlePostRenderTasks();
 
     // Called periodically at the end of each render quantum to dereference finished source nodes.
     void derefFinishedSourceNodes();
 
-    void registerLiveAudioSummingJunction(AudioSummingJunction&);
     void registerLiveNode(AudioNode&);
 
     // Keeps track of the number of connections made.
     void incrementConnectionCount()
     {
         ASSERT(isMainThread());
         m_connectionCount++;
     }
 
     unsigned connectionCount() const { return m_connectionCount; }
@@ skipping 111 matching lines @@
     class AudioNodeDisposer {
     public:
         explicit AudioNodeDisposer(AudioNode& node) : m_node(node) { }
         ~AudioNodeDisposer();
 
     private:
         AudioNode& m_node;
     };
     HeapHashMap<WeakMember<AudioNode>, OwnPtr<AudioNodeDisposer>> m_liveNodes;
 
-    class AudioSummingJunctionDisposer {
-    public:
-        explicit AudioSummingJunctionDisposer(AudioSummingJunction& junction) : m_junction(junction) { }
-        ~AudioSummingJunctionDisposer();
-
-    private:
-        AudioSummingJunction& m_junction;
-    };
-    // The purpose of m_liveAudioSummingJunctions is to remove a dying
-    // AudioSummingJunction from m_dirtySummingJunctions. However we put all of
-    // AudioSummingJunction objects to m_liveAudioSummingJunctions to avoid
-    // concurrent access to m_liveAudioSummingJunctions.
-    HeapHashMap<WeakMember<AudioSummingJunction>, OwnPtr<AudioSummingJunctionDisposer>> m_liveAudioSummingJunctions;
-
     unsigned m_connectionCount;
 
     // Graph locking.
     bool m_didInitializeContextGraphMutex;
     RefPtr<DeferredTaskHandler> m_deferredTaskHandler;
 
     Member<AudioBuffer> m_renderTarget;
 
     bool m_isOfflineContext;
 
@@ skipping 17 matching lines @@
     // This is considering 32 is large enough for multiple channels audio.
     // It is somewhat arbitrary and could be increased if necessary.
     enum { MaxNumberOfChannels = 32 };
 
     unsigned m_contextId;
 };
 
 } // namespace blink
 
 #endif // AudioContext_h