Add DEFINE_STATIC_REF_WILL_BE_PERSISTENT macro

Source/core/animation/AnimatableValue.cpp

 /*
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 namespace {
 
 const double defaultDistance = 1;
 
 } // namespace
 
 namespace WebCore {
 
 const AnimatableValue* AnimatableValue::neutralValue()
 {
-#if ENABLE_OILPAN
-    DEFINE_STATIC_LOCAL(Persistent<AnimatableNeutral>, neutralSentinelValue, (AnimatableNeutral::create()));
-    return neutralSentinelValue.get();
-#else
-    DEFINE_STATIC_REF(AnimatableNeutral, neutralSentinelValue, (AnimatableNeutral::create()));
+    DEFINE_STATIC_REF_WILL_BE_PERSISTENT(AnimatableNeutral, neutralSentinelValue, (AnimatableNeutral::create()));
     return neutralSentinelValue;
-#endif
 }
 
 PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableValue::interpolate(const AnimatableValue* left, const AnimatableValue* right, double fraction)
 {
     ASSERT(left);
     ASSERT(right);
     ASSERT(!left->isNeutral());
     ASSERT(!right->isNeutral());
 
     if (fraction && fraction != 1 && left->isSameType(right))
@@ skipping 12 matching lines @@
 
     return defaultDistance;
 }
 
 double AnimatableValue::distanceTo(const AnimatableValue*) const
 {
     return defaultDistance;
 }
 
 } // namespace WebCore