Add operator== to CSSAnimationData.

third_party/WebKit/Source/core/animation/css/CSSAnimationData.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CSSAnimationData_h
 #define CSSAnimationData_h
 
 #include <memory>
 #include "core/animation/Timing.h"
 #include "core/animation/css/CSSTimingData.h"
 #include "core/style/ComputedStyleConstants.h"
 #include "platform/wtf/PtrUtil.h"
 
 namespace blink {
 
 class CSSAnimationData final : public CSSTimingData {
  public:
   static std::unique_ptr<CSSAnimationData> Create() {
     return WTF::WrapUnique(new CSSAnimationData);
   }
 
   std::unique_ptr<CSSAnimationData> Clone() const {
     return WTF::WrapUnique(new CSSAnimationData(*this));
   }
 
   bool AnimationsMatchForStyleRecalc(const CSSAnimationData& other) const;
+  bool operator==(const CSSAnimationData& other) const {
+    return AnimationsMatchForStyleRecalc(other);
+  }
 
   Timing ConvertToTiming(size_t index) const;
 
   const Vector<AtomicString>& NameList() const { return name_list_; }
   const Vector<double>& IterationCountList() const {
     return iteration_count_list_;
   }
   const Vector<Timing::PlaybackDirection>& DirectionList() const {
     return direction_list_;
   }
@@ skipping 25 matching lines @@
   Vector<AtomicString> name_list_;
   Vector<double> iteration_count_list_;
   Vector<Timing::PlaybackDirection> direction_list_;
   Vector<Timing::FillMode> fill_mode_list_;
   Vector<EAnimPlayState> play_state_list_;
 };
 
 }  // namespace blink
 
 #endif  // CSSAnimationData_h