Pass RenderStyle / RenderObject by reference in more places

Source/core/rendering/style/KeyframeList.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 50 matching lines @@
     static TimingFunction* timingFunction(const RenderStyle*, const AtomicString& name);
 
 private:
     double m_key;
     HashSet<CSSPropertyID> m_properties; // The properties specified in this keyframe.
     RefPtr<RenderStyle> m_style;
 };
 
 class KeyframeList {
 public:
-    KeyframeList(RenderObject*, const AtomicString& animationName)
+    KeyframeList(RenderObject&, const AtomicString& animationName)
         : m_animationName(animationName)
     {
         insert(KeyframeValue(0, 0));
         insert(KeyframeValue(1, 0));
     }
     ~KeyframeList();
 
     const AtomicString& animationName() const { return m_animationName; }
 
     void insert(const KeyframeValue& keyframe);
@@ skipping 10 matching lines @@
 
 private:
     AtomicString m_animationName;
     Vector<KeyframeValue> m_keyframes; // Kept sorted by key.
     HashSet<CSSPropertyID> m_properties; // The properties being animated.
 };
 
 } // namespace WebCore
 
 #endif // KeyframeList_h