Remove input/source components from AudioDestination

third_party/WebKit/Source/platform/exported/WebAudioDevice.cpp

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
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  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
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 #include "public/platform/WebAudioDevice.h"
 
 namespace blink {
 
 void WebAudioDevice::RenderCallback::render(
-    const WebVector<float*>& sourceData,
     const WebVector<float*>& destinationData,
     size_t numberOfFrames,
     double delay,
     double delayTimestamp,
     size_t priorFramesSkipped) {}
 
 WebAudioDevice::RenderCallback::~RenderCallback() {}
 
 }  // namespace blink