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 0c642086e79f9b8aff19aa5a5182bf8268f6ded0..1b0f81e320ad2f63d9e4d1864f782a2afa7b386a 100644
--- a/Source/modules/webaudio/AudioContext.cpp
+++ b/Source/modules/webaudio/AudioContext.cpp
@@ -67,6 +67,7 @@
 #include "modules/webaudio/WaveShaperNode.h"
 #include "platform/audio/FFTFrame.h"
 #include "platform/audio/HRTFPanner.h"
+#include "platform/weborigin/SecurityOrigin.h"
 #include "wtf/Atomics.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/WTFString.h"
@@ -1149,6 +1150,11 @@ void AudioContext::updateChangedChannelCountMode()
     m_deferredCountModeChange.clear();
 }
 
+SecurityOrigin* AudioContext::securityOrigin() const
+{
+    return executionContext()->securityOrigin();
+}
+
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)