Tried to move AudioSummingJuction to oilpan

Source/modules/webaudio/AudioListener.h

Index: Source/modules/webaudio/AudioListener.h
diff --git a/Source/modules/webaudio/AudioListener.h b/Source/modules/webaudio/AudioListener.h
index a2db467877e442ac057d264fd135de0a159f9907..214db390b700f960513c7b408f0d190be05c3f2e 100644
--- a/Source/modules/webaudio/AudioListener.h
+++ b/Source/modules/webaudio/AudioListener.h
@@ -31,6 +31,7 @@
 
 #include "bindings/v8/ScriptWrappable.h"
 #include "platform/geometry/FloatPoint3D.h"
+#include "platform/heap/Handle.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefCounted.h"
 #include "wtf/Vector.h"
@@ -41,11 +42,11 @@ class PannerNode;
 
 // AudioListener maintains the state of the listener in the audio scene as defined in the OpenAL specification.
 
-class AudioListener : public ScriptWrappable, public RefCounted<AudioListener> {
+class AudioListener : public RefCountedWillBeGarbageCollectedFinalized<AudioListener>, public ScriptWrappable {
 public:
-    static PassRefPtr<AudioListener> create()
+    static PassRefPtrWillBeRawPtr<AudioListener> create()
     {
-        return adoptRef(new AudioListener());
+        return adoptRefWillBeNoop(new AudioListener());
     }
     virtual ~AudioListener();
 
@@ -78,6 +79,8 @@ public:
     void addPanner(PannerNode*);
     void removePanner(PannerNode*);
 
+    void trace(Visitor*) { }
+
 private:
     AudioListener();