Oilpan: Unship CSSValues and AnimatableValues

Source/core/animation/animatable/AnimatableDouble.h

Index: Source/core/animation/animatable/AnimatableDouble.h
diff --git a/Source/core/animation/animatable/AnimatableDouble.h b/Source/core/animation/animatable/AnimatableDouble.h
index 618d0f0da986387ae3d18bc873e7df3bb3fa0d86..8dcd58e555faddae123f7d435b225c43064953a1 100644
--- a/Source/core/animation/animatable/AnimatableDouble.h
+++ b/Source/core/animation/animatable/AnimatableDouble.h
@@ -40,17 +40,15 @@ class CORE_EXPORT AnimatableDouble final : public AnimatableValue {
 public:
     ~AnimatableDouble() override { }
 
-    static PassRefPtrWillBeRawPtr<AnimatableDouble> create(double number)
+    static PassRefPtr<AnimatableDouble> create(double number)
     {
-        return adoptRefWillBeNoop(new AnimatableDouble(number));
+        return adoptRef(new AnimatableDouble(number));
     }
 
     double toDouble() const { return m_number; }
 
-    DEFINE_INLINE_VIRTUAL_TRACE() { AnimatableValue::trace(visitor); }
-
 protected:
-    PassRefPtrWillBeRawPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const override;
+    PassRefPtr<AnimatableValue> interpolateTo(const AnimatableValue*, double fraction) const override;
 
 private:
     AnimatableDouble(double number)