Move webaudio to oilpan

Source/modules/webaudio/WaveShaperNode.h

Index: Source/modules/webaudio/WaveShaperNode.h
diff --git a/Source/modules/webaudio/WaveShaperNode.h b/Source/modules/webaudio/WaveShaperNode.h
index 6a3847b46e6fe0be95fccdc2c8c5829de45b25ca..159a39fb0128ebe6b3230d46e169f2697c4a9a8e 100644
--- a/Source/modules/webaudio/WaveShaperNode.h
+++ b/Source/modules/webaudio/WaveShaperNode.h
@@ -36,9 +36,9 @@ class ExceptionState;
 
 class WaveShaperNode FINAL : public AudioBasicProcessorNode {
 public:
-    static PassRefPtr<WaveShaperNode> create(AudioContext* context)
+    static PassRefPtrWillBeRawPtr<WaveShaperNode> create(AudioContext* context)
     {
-        return adoptRef(new WaveShaperNode(context));
+        return adoptRefWillBeNoop(new WaveShaperNode(context));
     }
 
     // setCurve() is called on the main thread.