Pass RenderStyle / RenderObject by reference in more places

Source/core/frame/animation/ImplicitAnimation.h

Index: Source/core/frame/animation/ImplicitAnimation.h
diff --git a/Source/core/frame/animation/ImplicitAnimation.h b/Source/core/frame/animation/ImplicitAnimation.h
index 573bf1c3c5e63d3d9de8848de276a35c005d5f10..c531b36a81d7d41c218fa04cdbdfca8bb8711375 100644
--- a/Source/core/frame/animation/ImplicitAnimation.h
+++ b/Source/core/frame/animation/ImplicitAnimation.h
@@ -39,7 +39,7 @@ namespace WebCore {
 // for a single RenderObject.
 class ImplicitAnimation : public AnimationBase {
 public:
-    static PassRefPtr<ImplicitAnimation> create(const CSSAnimationData* animation, CSSPropertyID animatingProperty, RenderObject* renderer, CompositeAnimation* compositeAnimation, RenderStyle* fromStyle)
+    static PassRefPtr<ImplicitAnimation> create(const CSSAnimationData* animation, CSSPropertyID animatingProperty, RenderObject& renderer, CompositeAnimation* compositeAnimation, RenderStyle* fromStyle)
     {
         return adoptRef(new ImplicitAnimation(animation, animatingProperty, renderer, compositeAnimation, fromStyle));
     };
@@ -80,7 +80,7 @@ protected:
     void checkForMatchingFilterFunctionLists();
 
 private:
-    ImplicitAnimation(const CSSAnimationData*, CSSPropertyID, RenderObject*, CompositeAnimation*, RenderStyle*);
+    ImplicitAnimation(const CSSAnimationData*, CSSPropertyID, RenderObject&, CompositeAnimation*, RenderStyle*);
     virtual ~ImplicitAnimation();
 
     CSSPropertyID m_transitionProperty; // Transition property as specified in the RenderStyle.