Assert that AudioContext::destination() is not called from the audio thread

third_party/WebKit/Source/modules/webaudio/AbstractAudioContext.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 171 matching lines @@
 {
     uninitialize();
 }
 
 bool AbstractAudioContext::hasPendingActivity() const
 {
     // There's no pending activity if the audio context has been cleared.
     return !m_isCleared;
 }
 
+AudioDestinationNode* AbstractAudioContext::destination() const
+{
+    // Cannot be called from the audio thread because this method touches objects managed by Oilpan,
+    // and the audio thread is not managed by Oilpan.
+    ASSERT(!isAudioThread());
+    return m_destinationNode.get();
+}
+
 void AbstractAudioContext::throwExceptionForClosedState(ExceptionState& exceptionState)
 {
     exceptionState.throwDOMException(InvalidStateError, "AudioContext has been closed.");
 }
 
 AudioBuffer* AbstractAudioContext::createBuffer(unsigned numberOfChannels, size_t numberOfFrames, float sampleRate, ExceptionState& exceptionState)
 {
     // It's ok to call createBuffer, even if the context is closed because the AudioBuffer doesn't
     // really "belong" to any particular context.
 
@@ skipping 747 matching lines @@
 SecurityOrigin* AbstractAudioContext::getSecurityOrigin() const
 {
     if (getExecutionContext())
         return getExecutionContext()->getSecurityOrigin();
 
     return nullptr;
 }
 
 } // namespace blink