[Oilpan] Migrate most classes under core/animations to Oilpan heap.

Source/core/animation/LengthStyleInterpolation.cpp

Index: Source/core/animation/LengthStyleInterpolation.cpp
diff --git a/Source/core/animation/LengthStyleInterpolation.cpp b/Source/core/animation/LengthStyleInterpolation.cpp
index c4a1fff45ec77ada63f937f95d614497d8ea3b0d..2c4811a8631b0f0f2daba4471be75abd6b875fe4 100644
--- a/Source/core/animation/LengthStyleInterpolation.cpp
+++ b/Source/core/animation/LengthStyleInterpolation.cpp
@@ -71,12 +71,12 @@ bool LengthStyleInterpolation::canCreateFrom(const CSSValue& value, CSSPropertyI
     return value.isCalcValue();
 }
 
-PassOwnPtrWillBeRawPtr<InterpolableValue> LengthStyleInterpolation::toInterpolableValue(const CSSValue& value, CSSPropertyID id)
+InterpolableValue* LengthStyleInterpolation::toInterpolableValue(const CSSValue& value, CSSPropertyID id)
 {
     ASSERT(canCreateFrom(value, id));
-    OwnPtrWillBeRawPtr<InterpolableList> listOfValuesAndTypes = InterpolableList::create(2);
-    OwnPtrWillBeRawPtr<InterpolableList> listOfValues = InterpolableList::create(CSSPrimitiveValue::LengthUnitTypeCount);
-    OwnPtrWillBeRawPtr<InterpolableList> listOfTypes = InterpolableList::create(CSSPrimitiveValue::LengthUnitTypeCount);
+    InterpolableList* listOfValuesAndTypes = InterpolableList::create(2);
+    InterpolableList* listOfValues = InterpolableList::create(CSSPrimitiveValue::LengthUnitTypeCount);
+    InterpolableList* listOfTypes = InterpolableList::create(CSSPrimitiveValue::LengthUnitTypeCount);
 
     const CSSPrimitiveValue& primitive = toCSSPrimitiveValue(value);
 
@@ -101,10 +101,10 @@ PassOwnPtrWillBeRawPtr<InterpolableValue> LengthStyleInterpolation::toInterpolab
         listOfTypes->set(i, InterpolableNumber::create(arrayOfTypes.get(i)));
     }
 
-    listOfValuesAndTypes->set(0, listOfValues.release());
-    listOfValuesAndTypes->set(1, listOfTypes.release());
+    listOfValuesAndTypes->set(0, listOfValues);
+    listOfValuesAndTypes->set(1, listOfTypes);
 
-    return listOfValuesAndTypes.release();
+    return listOfValuesAndTypes;
 }
 
 bool LengthStyleInterpolation::isPixelsOrPercentOnly(const InterpolableValue& value)
@@ -317,9 +317,9 @@ void LengthStyleInterpolation::apply(StyleResolverState& state) const
     if (m_lengthSetter) {
         (state.style()->*m_lengthSetter)(lengthFromInterpolableValue(*m_cachedValue, m_range, state.style()->effectiveZoom()));
 #if ENABLE(ASSERT)
-        RefPtrWillBeRawPtr<AnimatableValue> before = CSSAnimatableValueFactory::create(m_id, *state.style());
+        AnimatableValue* before = CSSAnimatableValueFactory::create(m_id, *state.style());
         StyleBuilder::applyProperty(m_id, state, fromInterpolableValue(*m_cachedValue, m_range).get());
-        RefPtrWillBeRawPtr<AnimatableValue> after = CSSAnimatableValueFactory::create(m_id, *state.style());
+        AnimatableValue* after = CSSAnimatableValueFactory::create(m_id, *state.style());
         ASSERT(before->equals(*after));
 #endif
     } else {