Note creation of AudioContext when DEBUG_AUDIONODE_REFERENCES is set.

Source/modules/webaudio/AudioContext.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 107 matching lines @@
     , m_connectionCount(0)
     , m_audioThread(0)
     , m_graphOwnerThread(UndefinedThreadIdentifier)
     , m_isOfflineContext(false)
 {
     ScriptWrappable::init(this);
 
     m_destinationNode = DefaultAudioDestinationNode::create(this);
 
     initialize();
+#if DEBUG_AUDIONODE_REFERENCES
+    fprintf(stderr, "%p: AudioContext::AudioContext() #%u\n", this, AudioContext::s_hardwareContextCount);

[Ken Russell (switch to Gerrit), 2014/07/25 18:28:56]

Why not just use WTF_LOG from wtf/Assertions.h?

+#endif
 }
 
 // Constructor for offline (non-realtime) rendering.
 AudioContext::AudioContext(Document* document, unsigned numberOfChannels, size_t numberOfFrames, float sampleRate)
     : ActiveDOMObject(document)
     , m_isStopScheduled(false)
     , m_isCleared(false)
     , m_isInitialized(false)
     , m_destinationNode(nullptr)
 #if !ENABLE(OILPAN)
@@ skipping 882 matching lines @@
     visitor->trace(m_referencedNodes);
     visitor->trace(m_liveNodes);
     visitor->trace(m_liveAudioSummingJunctions);
 #endif
     EventTargetWithInlineData::trace(visitor);
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)