Oilpan: Unship oilpan from temporary animation objects

Source/core/animation/animatable/AnimatableLengthBoxAndBool.cpp

Index: Source/core/animation/animatable/AnimatableLengthBoxAndBool.cpp
diff --git a/Source/core/animation/animatable/AnimatableLengthBoxAndBool.cpp b/Source/core/animation/animatable/AnimatableLengthBoxAndBool.cpp
index a334b7909a5c21197804964e388d923578e336f7..53dadf31091f567e0e13ca80ff815f6c74a07ab8 100644
--- a/Source/core/animation/animatable/AnimatableLengthBoxAndBool.cpp
+++ b/Source/core/animation/animatable/AnimatableLengthBoxAndBool.cpp
@@ -60,7 +60,7 @@ bool AnimatableLengthBoxAndBool::usesDefaultInterpolationWith(const AnimatableVa
         || !sidesHaveSameUnits(boxA->bottom(), boxB->bottom());
 }
 
-PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableLengthBoxAndBool::interpolateTo(const AnimatableValue* value, double fraction) const
+PassRefPtr<AnimatableValue> AnimatableLengthBoxAndBool::interpolateTo(const AnimatableValue* value, double fraction) const
 {
     const AnimatableLengthBoxAndBool* lengthBoxAndBool = toAnimatableLengthBoxAndBool(value);
     if (usesDefaultInterpolationWith(lengthBoxAndBool))
@@ -76,10 +76,4 @@ bool AnimatableLengthBoxAndBool::equalTo(const AnimatableValue* value) const
     return box()->equals(lengthBox->box()) && flag() == lengthBox->flag();
 }
 
-DEFINE_TRACE(AnimatableLengthBoxAndBool)
-{
-    visitor->trace(m_box);
-    AnimatableValue::trace(visitor);
-}
-
 }