Tried to move AudioSummingJuction to oilpan

Source/modules/webaudio/OscillatorNode.h

Index: Source/modules/webaudio/OscillatorNode.h
diff --git a/Source/modules/webaudio/OscillatorNode.h b/Source/modules/webaudio/OscillatorNode.h
index 7e23c99ab05b9bf847e5f6f190fb55ac77b166d4..be18d7d94ff3a9bdb66b19664f116d06177c5117 100644
--- a/Source/modules/webaudio/OscillatorNode.h
+++ b/Source/modules/webaudio/OscillatorNode.h
@@ -52,7 +52,7 @@ public:
         CUSTOM = 4
     };
 
-    static PassRefPtr<OscillatorNode> create(AudioContext*, float sampleRate);
+    static PassRefPtrWillBeRawPtr<OscillatorNode> create(AudioContext*, float sampleRate);
 
     virtual ~OscillatorNode();
 
@@ -68,6 +68,8 @@ public:
 
     void setPeriodicWave(PeriodicWave*);
 
+    virtual void trace(Visitor*) OVERRIDE;
+
 private:
     OscillatorNode(AudioContext*, float sampleRate);
 
@@ -82,10 +84,10 @@ private:
     unsigned short m_type;
 
     // Frequency value in Hertz.
-    RefPtr<AudioParam> m_frequency;
+    RefPtrWillBeMember<AudioParam> m_frequency;
 
     // Detune value (deviating from the frequency) in Cents.
-    RefPtr<AudioParam> m_detune;
+    RefPtrWillBeMember<AudioParam> m_detune;
 
     bool m_firstRender;
 
@@ -100,7 +102,7 @@ private:
     AudioFloatArray m_phaseIncrements;
     AudioFloatArray m_detuneValues;
 
-    RefPtr<PeriodicWave> m_periodicWave;
+    RefPtrWillBeMember<PeriodicWave> m_periodicWave;
 };
 
 } // namespace WebCore