Oilpan: Unship oilpan from temporary animation objects

Source/core/animation/ImageSliceStyleInterpolation.h

Index: Source/core/animation/ImageSliceStyleInterpolation.h
diff --git a/Source/core/animation/ImageSliceStyleInterpolation.h b/Source/core/animation/ImageSliceStyleInterpolation.h
index 46f56612bc55e3da13c17f7e4a5f2434b67ce741..b728dd80ec8f331c8fdb0d0acc34095ec3ae2b5e 100644
--- a/Source/core/animation/ImageSliceStyleInterpolation.h
+++ b/Source/core/animation/ImageSliceStyleInterpolation.h
@@ -14,10 +14,9 @@ class CSSBorderImageSliceValue;
 class ImageSliceStyleInterpolation : public StyleInterpolation {
 public:
     static bool usesDefaultInterpolation(const CSSValue&, const CSSValue&);
-    static PassRefPtrWillBeRawPtr<ImageSliceStyleInterpolation> maybeCreate(const CSSValue&, const CSSValue&, CSSPropertyID);
+    static PassRefPtr<ImageSliceStyleInterpolation> maybeCreate(const CSSValue&, const CSSValue&, CSSPropertyID);
 
     void apply(StyleResolverState&) const override;
-    DECLARE_VIRTUAL_TRACE();
 
     // Image slices can have either percentages or numbers: http://dev.w3.org/csswg/css-backgrounds-3/#the-border-image-slice
     struct Metadata {
@@ -27,7 +26,7 @@ public:
     };
 
 private:
-    ImageSliceStyleInterpolation(PassOwnPtrWillBeRawPtr<InterpolableValue> start, PassOwnPtrWillBeRawPtr<InterpolableValue> end, CSSPropertyID property, Metadata metadata)
+    ImageSliceStyleInterpolation(PassOwnPtr<InterpolableValue> start, PassOwnPtr<InterpolableValue> end, CSSPropertyID property, Metadata metadata)
         : StyleInterpolation(start, end, property)
         , m_metadata(metadata)
     { }