Tried to move AudioSummingJuction to oilpan

Source/modules/webaudio/AudioSummingJunction.cpp

Index: Source/modules/webaudio/AudioSummingJunction.cpp
diff --git a/Source/modules/webaudio/AudioSummingJunction.cpp b/Source/modules/webaudio/AudioSummingJunction.cpp
index 7b7c9360cfee4df6f0a5cdaef923add5904b0628..4adc593e253841c05e03c44b9b5055397d52ac39 100644
--- a/Source/modules/webaudio/AudioSummingJunction.cpp
+++ b/Source/modules/webaudio/AudioSummingJunction.cpp
@@ -44,8 +44,10 @@ AudioSummingJunction::AudioSummingJunction(AudioContext* context)
 
 AudioSummingJunction::~AudioSummingJunction()
 {
+#if !ENABLE(OILPAN)
     if (m_renderingStateNeedUpdating && m_context.get())
         m_context->removeMarkedSummingJunction(this);
+#endif
 }
 
 void AudioSummingJunction::changedOutputs()
@@ -77,6 +79,11 @@ void AudioSummingJunction::updateRenderingState()
     }
 }
 
+void AudioSummingJunction::trace(Visitor* visitor)
+{
+    visitor->trace(m_context);
+}
+
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)