Pass RenderStyle / RenderObject by reference in more places

Source/core/frame/animation/AnimationBase.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 32 matching lines @@
 class Node;
 class RenderObject;
 class RenderStyle;
 class TimingFunction;
 
 class AnimationBase : public RefCounted<AnimationBase> {
     friend class CompositeAnimation;
     friend class CSSPropertyAnimation;
 
 public:
-    AnimationBase(const CSSAnimationData* transition, RenderObject* renderer, CompositeAnimation* compAnim);
+    AnimationBase(const CSSAnimationData* transition, RenderObject& renderer, CompositeAnimation* compAnim);
     virtual ~AnimationBase() { }
 
     RenderObject* renderer() const { return m_object; }
     void clear()
     {
       endAnimation();
       m_object = 0;
       m_compAnim = 0;
     }
 
@@ skipping 155 matching lines @@
 
     RenderObject* m_object;
 
     RefPtr<CSSAnimationData> m_animation;
     CompositeAnimation* m_compAnim;
 };
 
 } // namespace WebCore
 
 #endif // AnimationBase_h