Oilpan: Unship oilpan from temporary animation objects

Source/core/animation/animatable/AnimatableLengthBox.cpp

Index: Source/core/animation/animatable/AnimatableLengthBox.cpp
diff --git a/Source/core/animation/animatable/AnimatableLengthBox.cpp b/Source/core/animation/animatable/AnimatableLengthBox.cpp
index cf5b65087f77354fbc7d7af523a500571e8da3f0..20a0d006cb90e986d95c29992fb5fbd9d4bcfa1d 100644
--- a/Source/core/animation/animatable/AnimatableLengthBox.cpp
+++ b/Source/core/animation/animatable/AnimatableLengthBox.cpp
@@ -33,7 +33,7 @@
 
 namespace blink {
 
-PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableLengthBox::interpolateTo(const AnimatableValue* value, double fraction) const
+PassRefPtr<AnimatableValue> AnimatableLengthBox::interpolateTo(const AnimatableValue* value, double fraction) const
 {
     const AnimatableLengthBox* lengthBox = toAnimatableLengthBox(value);
     return AnimatableLengthBox::create(
@@ -52,13 +52,4 @@ bool AnimatableLengthBox::equalTo(const AnimatableValue* value) const
         && bottom()->equals(lengthBox->bottom());
 }
 
-DEFINE_TRACE(AnimatableLengthBox)
-{
-    visitor->trace(m_left);
-    visitor->trace(m_right);
-    visitor->trace(m_top);
-    visitor->trace(m_bottom);
-    AnimatableValue::trace(visitor);
-}
-
 }