Enable Oilpan by default for webaudio/

Source/modules/webaudio/AudioBufferSourceNode.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 29 matching lines @@
 
 namespace blink {
 
 const double DefaultGrainDuration = 0.020; // 20ms
 
 // Arbitrary upper limit on playback rate.
 // Higher than expected rates can be useful when playing back oversampled buffers
 // to minimize linear interpolation aliasing.
 const double MaxRate = 1024;
 
-PassRefPtrWillBeRawPtr<AudioBufferSourceNode> AudioBufferSourceNode::create(AudioContext* context, float sampleRate)
+AudioBufferSourceNode* AudioBufferSourceNode::create(AudioContext* context, float sampleRate)
 {
-    return adoptRefWillBeNoop(new AudioBufferSourceNode(context, sampleRate));
+    return new AudioBufferSourceNode(context, sampleRate);
 }
 
 AudioBufferSourceNode::AudioBufferSourceNode(AudioContext* context, float sampleRate)
     : AudioScheduledSourceNode(context, sampleRate)
     , m_buffer(nullptr)
     , m_isLooping(false)
     , m_loopStart(0)
     , m_loopEnd(0)
     , m_virtualReadIndex(0)
     , m_isGrain(false)
@@ skipping 385 matching lines @@
 }
 
 bool AudioBufferSourceNode::propagatesSilence() const
 {
     return !isPlayingOrScheduled() || hasFinished() || !m_buffer;
 }
 
 void AudioBufferSourceNode::setPannerNode(PannerNode* pannerNode)
 {
     if (m_pannerNode != pannerNode && !hasFinished()) {
-        RefPtrWillBeRawPtr<PannerNode> oldPannerNode(m_pannerNode.release());
+        PannerNode* oldPannerNode(m_pannerNode.release());
         m_pannerNode = pannerNode;
         if (pannerNode)
             pannerNode->makeConnection();
         if (oldPannerNode)
             oldPannerNode->breakConnection();
     }
 }
 
 void AudioBufferSourceNode::clearPannerNode()
 {
@@ skipping 14 matching lines @@
 {
     visitor->trace(m_buffer);
     visitor->trace(m_playbackRate);
     visitor->trace(m_pannerNode);
     AudioScheduledSourceNode::trace(visitor);
 }
 
 } // namespace blink
 
 #endif // ENABLE(WEB_AUDIO)