Pass RenderStyle / RenderObject by reference in more places

Source/core/frame/animation/ImplicitAnimation.h

 /*
  * Copyright (C) 2007 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 21 matching lines @@
 #include "CSSPropertyNames.h"
 #include "core/dom/Document.h"
 #include "core/frame/animation/AnimationBase.h"
 
 namespace WebCore {
 
 // An ImplicitAnimation tracks the state of a transition of a specific CSS property
 // 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));
     };
 
     CSSPropertyID transitionProperty() const { return m_transitionProperty; }
     CSSPropertyID animatingProperty() const { return m_animatingProperty; }
 
     virtual void onAnimationEnd(double elapsedTime);
     virtual void startAnimation(double timeOffset);
     virtual void pauseAnimation(double /*timeOffset*/);
@@ skipping 20 matching lines @@
     void setActive(bool b) { m_active = b; }
 
 protected:
     bool shouldSendEventForListener(Document::ListenerType) const;
     bool sendTransitionEvent(const AtomicString&, double elapsedTime);
 
     void validateTransformFunctionList();
     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.
     CSSPropertyID m_animatingProperty; // Specific property for this ImplicitAnimation
     bool m_overridden;          // true when there is a keyframe animation that overrides the transitioning property
     bool m_active;              // used for culling the list of transitions
 
     // The two styles that we are blending.
     RefPtr<RenderStyle> m_fromStyle;
     RefPtr<RenderStyle> m_toStyle;
 };
 
 } // namespace WebCore
 
 #endif // ImplicitAnimation_h