ActiveScriptWrappable: GC wrappers in detached ExecutionContexts.

third_party/WebKit/Source/modules/webaudio/ScriptProcessorNode.cpp

 /*
  * 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 318 matching lines @@
   }
 }
 
 // ----------------------------------------------------------------
 
 ScriptProcessorNode::ScriptProcessorNode(BaseAudioContext& context,
                                          float sampleRate,
                                          size_t bufferSize,
                                          unsigned numberOfInputChannels,
                                          unsigned numberOfOutputChannels)
-    : AudioNode(context), ActiveScriptWrappable(this) {
+    : AudioNode(context), ActiveScriptWrappable<ScriptProcessorNode>(this) {
   setHandler(ScriptProcessorHandler::create(*this, sampleRate, bufferSize,
                                             numberOfInputChannels,
                                             numberOfOutputChannels));
 }
 
 static size_t chooseBufferSize() {
   // Choose a buffer size based on the audio hardware buffer size. Arbitarily
   // make it a power of two that is 4 times greater than the hardware buffer
   // size.
   // FIXME: What is the best way to choose this?
@@ skipping 123 matching lines @@
 
   // If |onaudioprocess| event handler is defined, the node should not be
   // GCed even if it is out of scope.
   if (hasEventListeners(EventTypeNames::audioprocess))
     return true;
 
   return false;
 }
 
 }  // namespace blink