Enable Oilpan by default for webaudio/

Source/modules/webaudio/AnalyserNode.h

Index: Source/modules/webaudio/AnalyserNode.h
diff --git a/Source/modules/webaudio/AnalyserNode.h b/Source/modules/webaudio/AnalyserNode.h
index b5a50737908ae923c9c9242721fcbbb6576f77d2..14626fd3c675bdb9e49e5a3ec13eabc601372a41 100644
--- a/Source/modules/webaudio/AnalyserNode.h
+++ b/Source/modules/webaudio/AnalyserNode.h
@@ -35,9 +35,9 @@ class ExceptionState;
 
 class AnalyserNode FINAL : public AudioBasicInspectorNode {
 public:
-    static PassRefPtrWillBeRawPtr<AnalyserNode> create(AudioContext* context, float sampleRate)
+    static AnalyserNode* create(AudioContext* context, float sampleRate)
     {
-        return adoptRefWillBeNoop(new AnalyserNode(context, sampleRate));
+        return adoptRefCountedGarbageCollectedWillBeNoop(new AnalyserNode(context, sampleRate));
     }
 
     virtual ~AnalyserNode();