Move webaudio to oilpan

Source/modules/webaudio/AudioScheduledSourceNode.h

 /*
  * Copyright (C) 2012 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
@@ skipping 40 matching lines @@
         UNSCHEDULED_STATE = 0,
         SCHEDULED_STATE = 1,
         PLAYING_STATE = 2,
         FINISHED_STATE = 3
     };
 
     // This helper class handles the lifetime of an AudioScheduledSourceNode with an onended event
     // listener. This keeps the node alive until the event listener is processed.
     class NotifyEndedTask {
     public:
-        NotifyEndedTask(PassRefPtr<AudioScheduledSourceNode> scheduledNode);
+        NotifyEndedTask(PassRefPtrWillBeRawPtr<AudioScheduledSourceNode> scheduledNode);
         void notifyEnded();
 
     private:
-        RefPtr<AudioScheduledSourceNode> m_scheduledNode;
+        RefPtrWillBeRawPtr<AudioScheduledSourceNode> m_scheduledNode;

[Mads Ager (chromium), 2014/03/27 11:06:49]

I'm not entirely sure, but it looks like this object is create on the audio
thread and then passed over to the main thread. In that case we should probably
just leave this a RefPtr to the AudioNode? The alternative would be to use a
CrossThreadPersistent that we should be able to allocate on any thread and
deallocate on any thread.

[haraken, 2014/03/27 11:44:05]

Shouldn't this be RefPtrWillBePersistent ? Otherwise, I guess m_scheduledNode
will be prematurely collected.

[keishi, 2014/04/03 06:53:19]

yes, this is created on the render thread and passed to the main thread. I used
a RefPtr

     };
 
     AudioScheduledSourceNode(AudioContext*, float sampleRate);
 
     // Scheduling.
     void start(ExceptionState& exceptionState) { start(0.0, exceptionState); }
     void start(double when, ExceptionState&);
     void stop(ExceptionState& exceptionState) { stop(0.0, exceptionState); }
     void stop(double when, ExceptionState&);
 
@@ skipping 33 matching lines @@
     double m_endTime; // in seconds
 
     bool m_hasEndedListener;
 
     static const double UnknownTime;
 };
 
 } // namespace WebCore
 
 #endif // AudioScheduledSourceNode_h