Output silence if the MediaElementAudioSourceNode has a different origin

Source/modules/webaudio/AudioContext.cpp

Index: Source/modules/webaudio/AudioContext.cpp
diff --git a/Source/modules/webaudio/AudioContext.cpp b/Source/modules/webaudio/AudioContext.cpp
index 4b7feeec4d1fe640cfdbefcdd364b2ed10cf4904..e2a704fcebe0b32100ec8368967e67d901005182 100644
--- a/Source/modules/webaudio/AudioContext.cpp
+++ b/Source/modules/webaudio/AudioContext.cpp
@@ -34,8 +34,6 @@
 #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"
@@ -63,6 +61,9 @@
 #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>
@@ -920,6 +921,11 @@ void AudioContext::updateChangedChannelCountMode()
     m_deferredCountModeChange.clear();
 }
 
+PassRefPtr<SecurityOrigin> AudioContext::securityOrigin() const
+{
+    return SecurityOrigin::create(executionContext()->url());
+}
+
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)