Remove unused matchPlayState argument from CSSAnimationData::animationsMatch()

Source/core/platform/animation/CSSAnimationData.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 130 matching lines @@
     bool operator!=(const CSSAnimationData& o) const { return !(*this == o); }
 
     bool fillsBackwards() const { return m_fillModeSet && (m_fillMode == AnimationFillModeBackwards || m_fillMode == AnimationFillModeBoth); }
     bool fillsForwards() const { return m_fillModeSet && (m_fillMode == AnimationFillModeForwards || m_fillMode == AnimationFillModeBoth); }
 
 private:
     CSSAnimationData();
     explicit CSSAnimationData(const CSSAnimationData&);
 
     // return true if all members of this class match (excluding m_next)
-    bool animationsMatch(const CSSAnimationData*, bool matchPlayStates = true) const;
+    bool animationsMatch(const CSSAnimationData*) const;
 
     AtomicString m_name;
     CSSPropertyID m_property;
     AnimationMode m_mode;
     double m_iterationCount;
     double m_delay;
     double m_duration;
     RefPtr<TimingFunction> m_timingFunction;
     unsigned m_direction : 2; // AnimationDirection
     unsigned m_fillMode : 2;
@@ skipping 20 matching lines @@
     static double initialAnimationIterationCount() { return 1.0; }
     static const String& initialAnimationName();
     static EAnimPlayState initialAnimationPlayState() { return AnimPlayStatePlaying; }
     static CSSPropertyID initialAnimationProperty() { return CSSPropertyInvalid; }
     static const PassRefPtr<TimingFunction> initialAnimationTimingFunction() { return CubicBezierTimingFunction::preset(CubicBezierTimingFunction::Ease); }
 };
 
 } // namespace WebCore
 
 #endif // CSSAnimationData_h