Oilpan: Unship oilpan from temporary animation objects

Source/core/animation/css/CSSAnimations.h

Index: Source/core/animation/css/CSSAnimations.h
diff --git a/Source/core/animation/css/CSSAnimations.h b/Source/core/animation/css/CSSAnimations.h
index 61e4abb13d39615294a03f40fccb7b05e3527140..f2eecba7b6433ffa17ad2b8a6f5324b4ebcff0d6 100644
--- a/Source/core/animation/css/CSSAnimations.h
+++ b/Source/core/animation/css/CSSAnimations.h
@@ -114,13 +114,11 @@ private:
         DEFINE_INLINE_TRACE()
         {
             visitor->trace(animation);
-            visitor->trace(from);
-            visitor->trace(to);
         }
 
         Member<Animation> animation;
-        RawPtrWillBeMember<const AnimatableValue> from;
-        RawPtrWillBeMember<const AnimatableValue> to;
+        const AnimatableValue* from;
+        const AnimatableValue* to;
     };
 
     using AnimationMap = HeapHashMap<AtomicString, Member<RunningAnimation>>;