Output silence if the MediaElementAudioSourceNode has a different origin

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 16 matching lines @@
 #if ENABLE(WEB_AUDIO)
 
 #include "modules/webaudio/AudioContext.h"
 
 #include "bindings/core/v8/ExceptionMessages.h"
 #include "bindings/core/v8/ExceptionState.h"
 #include "core/dom/Document.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/inspector/ScriptCallStack.h"
-#include "platform/audio/FFTFrame.h"
-#include "platform/audio/HRTFPanner.h"
 #include "modules/mediastream/MediaStream.h"
 #include "modules/webaudio/AnalyserNode.h"
 #include "modules/webaudio/AudioBuffer.h"
 #include "modules/webaudio/AudioBufferCallback.h"
 #include "modules/webaudio/AudioBufferSourceNode.h"
 #include "modules/webaudio/AudioListener.h"
 #include "modules/webaudio/AudioNodeInput.h"
 #include "modules/webaudio/AudioNodeOutput.h"
 #include "modules/webaudio/BiquadFilterNode.h"
 #include "modules/webaudio/ChannelMergerNode.h"
 #include "modules/webaudio/ChannelSplitterNode.h"
 #include "modules/webaudio/ConvolverNode.h"
 #include "modules/webaudio/DefaultAudioDestinationNode.h"
 #include "modules/webaudio/DelayNode.h"
 #include "modules/webaudio/DynamicsCompressorNode.h"
 #include "modules/webaudio/GainNode.h"
 #include "modules/webaudio/MediaElementAudioSourceNode.h"
 #include "modules/webaudio/MediaStreamAudioDestinationNode.h"
 #include "modules/webaudio/MediaStreamAudioSourceNode.h"
 #include "modules/webaudio/OfflineAudioCompletionEvent.h"
 #include "modules/webaudio/OfflineAudioContext.h"
 #include "modules/webaudio/OfflineAudioDestinationNode.h"
 #include "modules/webaudio/OscillatorNode.h"
 #include "modules/webaudio/PannerNode.h"
 #include "modules/webaudio/PeriodicWave.h"
 #include "modules/webaudio/ScriptProcessorNode.h"
 #include "modules/webaudio/WaveShaperNode.h"
+#include "platform/audio/FFTFrame.h"
+#include "platform/audio/HRTFPanner.h"
+#include "platform/weborigin/SecurityOrigin.h"
 
 #if DEBUG_AUDIONODE_REFERENCES
 #include <stdio.h>
 #endif
 
 #include "wtf/ArrayBuffer.h"
 #include "wtf/Atomics.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/WTFString.h"
 
@@ skipping 837 matching lines @@
 void AudioContext::updateChangedChannelCountMode()
 {
     ASSERT(isGraphOwner());
 
     for (HashSet<AudioNode*>::iterator k = m_deferredCountModeChange.begin(); k != m_deferredCountModeChange.end(); ++k)
         (*k)->updateChannelCountMode();
 
     m_deferredCountModeChange.clear();
 }
 
+PassRefPtr<SecurityOrigin> AudioContext::securityOrigin() const
+{
+    return SecurityOrigin::create(executionContext()->url());
+}
+
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)