Enable Oilpan by default for webaudio/

Source/modules/webaudio/AudioNodeInput.cpp

 /*
  * Copyright (C) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 24 matching lines @@
 namespace blink {
 
 inline AudioNodeInput::AudioNodeInput(AudioNode& node)
     : AudioSummingJunction(node.context())
     , m_node(node)
 {
     // Set to mono by default.
     m_internalSummingBus = AudioBus::create(1, AudioNode::ProcessingSizeInFrames);
 }
 
-PassOwnPtrWillBeRawPtr<AudioNodeInput> AudioNodeInput::create(AudioNode& node)
+AudioNodeInput* AudioNodeInput::create(AudioNode& node)
 {
-    return adoptPtrWillBeNoop(new AudioNodeInput(node));
+    return new AudioNodeInput(node);
 }
 
 void AudioNodeInput::trace(Visitor* visitor)
 {
     visitor->trace(m_node);
     AudioSummingJunction::trace(visitor);
 }
 
 void AudioNodeInput::connect(AudioNodeOutput& output)
 {
@@ skipping 168 matching lines @@
 
     // Handle multiple connections case.
     sumAllConnections(internalSummingBus, framesToProcess);
 
     return internalSummingBus;
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)