Enable Oilpan by default for webaudio/

Source/modules/webaudio/OscillatorNode.cpp

Index: Source/modules/webaudio/OscillatorNode.cpp
diff --git a/Source/modules/webaudio/OscillatorNode.cpp b/Source/modules/webaudio/OscillatorNode.cpp
index 42df963dc221df31a1ee019b3fa9f83c750d8487..9b8a5b5993aa07b46feffc3d9bc344b9de30b894 100644
--- a/Source/modules/webaudio/OscillatorNode.cpp
+++ b/Source/modules/webaudio/OscillatorNode.cpp
@@ -41,9 +41,9 @@ namespace blink {
 
 using namespace VectorMath;
 
-PassRefPtrWillBeRawPtr<OscillatorNode> OscillatorNode::create(AudioContext* context, float sampleRate)
+OscillatorNode* OscillatorNode::create(AudioContext* context, float sampleRate)
 {
-    return adoptRefWillBeNoop(new OscillatorNode(context, sampleRate));
+    return new OscillatorNode(context, sampleRate);
 }
 
 OscillatorNode::OscillatorNode(AudioContext* context, float sampleRate)
@@ -120,22 +120,22 @@ bool OscillatorNode::setType(unsigned type)
 
     switch (type) {
     case SINE: {
-        DEFINE_STATIC_REF_WILL_BE_PERSISTENT(PeriodicWave, periodicWaveSine, (PeriodicWave::createSine(sampleRate)));
+        DEFINE_STATIC_LOCAL(Persistent<PeriodicWave>, periodicWaveSine, (PeriodicWave::createSine(sampleRate)));
         periodicWave = periodicWaveSine;
         break;
     }
     case SQUARE: {
-        DEFINE_STATIC_REF_WILL_BE_PERSISTENT(PeriodicWave, periodicWaveSquare, (PeriodicWave::createSquare(sampleRate)));
+        DEFINE_STATIC_LOCAL(Persistent<PeriodicWave>, periodicWaveSquare, (PeriodicWave::createSquare(sampleRate)));
         periodicWave = periodicWaveSquare;
         break;
     }
     case SAWTOOTH: {
-        DEFINE_STATIC_REF_WILL_BE_PERSISTENT(PeriodicWave, periodicWaveSawtooth, (PeriodicWave::createSawtooth(sampleRate)));
+        DEFINE_STATIC_LOCAL(Persistent<PeriodicWave>, periodicWaveSawtooth, (PeriodicWave::createSawtooth(sampleRate)));
         periodicWave = periodicWaveSawtooth;
         break;
     }
     case TRIANGLE: {
-        DEFINE_STATIC_REF_WILL_BE_PERSISTENT(PeriodicWave, periodicWaveTriangle, (PeriodicWave::createTriangle(sampleRate)));
+        DEFINE_STATIC_LOCAL(Persistent<PeriodicWave>, periodicWaveTriangle, (PeriodicWave::createTriangle(sampleRate)));
         periodicWave = periodicWaveTriangle;
         break;
     }