Oilpan: Move AnimatableValue's hierarchy to oilpan's heap

Source/core/animation/AnimatableUnknownTest.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 34 matching lines @@
     virtual void SetUp()
     {
         cssValue = CSSArrayFunctionValue::create();
         animatableUnknown = AnimatableUnknown::create(cssValue);
 
         otherCSSValue = CSSArrayFunctionValue::create();
         otherAnimatableUnknown = AnimatableUnknown::create(otherCSSValue);
     }
 
     RefPtrWillBePersistent<CSSValue> cssValue;
-    RefPtr<AnimatableValue> animatableUnknown;
-
+    RefPtrWillBePersistent<AnimatableValue> animatableUnknown;
     RefPtrWillBePersistent<CSSValue> otherCSSValue;
-    RefPtr<AnimatableValue> otherAnimatableUnknown;
+    RefPtrWillBePersistent<AnimatableValue> otherAnimatableUnknown;
 };
 
 TEST_F(AnimationAnimatableUnknownTest, Create)
 {
     EXPECT_TRUE(animatableUnknown);
 }
 
 TEST_F(AnimationAnimatableUnknownTest, ToCSSValue)
 {
     EXPECT_EQ(cssValue, toAnimatableUnknown(animatableUnknown.get())->toCSSValue());
@@ skipping 14 matching lines @@
     EXPECT_EQ(cssValue, toAnimatableUnknown(AnimatableValue::interpolate(otherAnimatableUnknown.get(), animatableUnknown.get(), 1).get())->toCSSValue());
 }
 
 TEST_F(AnimationAnimatableUnknownTest, Add)
 {
     EXPECT_EQ(otherCSSValue, toAnimatableUnknown(AnimatableValue::add(animatableUnknown.get(), otherAnimatableUnknown.get()).get())->toCSSValue());
     EXPECT_EQ(cssValue, toAnimatableUnknown(AnimatableValue::add(otherAnimatableUnknown.get(), animatableUnknown.get()).get())->toCSSValue());
 }
 
 }