Revert of [Oilpan] Prepare full definition of classes before using Member

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 195 matching lines @@
 
     if (!audioData) {
         exceptionState.throwDOMException(
             SyntaxError,
             "invalid ArrayBuffer for audioData.");
         return;
     }
     m_audioDecoder.decodeAsync(audioData, sampleRate(), successCallback, errorCallback);
 }
 
-AudioListener* AbstractAudioContext::listener() const
-{
-    return m_listener;
-}
-
 AudioBufferSourceNode* AbstractAudioContext::createBufferSource(ExceptionState& exceptionState)
 {
     ASSERT(isMainThread());
 
     if (isContextClosed()) {
         throwExceptionForClosedState(exceptionState);
         return nullptr;
     }
 
     AudioBufferSourceNode* node = AudioBufferSourceNode::create(*this, sampleRate());
@@ skipping 625 matching lines @@
 {
     if (executionContext())
         return executionContext()->securityOrigin();
 
     return nullptr;
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)