Enable Oilpan by default for webaudio/

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 35e2e59c305c9b6a497504a5f5a4e558a2421019..7f17dc18b9760e06dd4b15ebb76c1cca23457080 100644
--- a/Source/modules/webaudio/AudioSummingJunction.cpp
+++ b/Source/modules/webaudio/AudioSummingJunction.cpp
@@ -39,17 +39,11 @@ AudioSummingJunction::AudioSummingJunction(AudioContext* context)
     , m_renderingStateNeedUpdating(false)
 {
     ASSERT(context);
-#if ENABLE(OILPAN)
     m_context->registerLiveAudioSummingJunction(*this);
-#endif
 }
 
 AudioSummingJunction::~AudioSummingJunction()
 {
-#if !ENABLE(OILPAN)
-    if (m_renderingStateNeedUpdating && m_context.get())
-        m_context->removeMarkedSummingJunction(this);
-#endif
 }
 
 void AudioSummingJunction::trace(Visitor* visitor)