Implement AnimationEffectTimingReadOnly interface

third_party/WebKit/Source/core/animation/AnimationEffectReadOnly.h

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 22 matching lines @@
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "core/animation/Timing.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class Animation;
 class AnimationEffectReadOnly;
-class AnimationEffectTiming;
+class AnimationEffectTimingReadOnly;
 class ComputedTimingProperties;
 
 enum TimingUpdateReason { TimingUpdateOnDemand, TimingUpdateForAnimationFrame };
 
 static inline bool isNull(double value) {
   return std::isnan(value);
 }
 
 static inline double nullValue() {
   return std::numeric_limits<double>::quiet_NaN();
@@ skipping 46 matching lines @@
   double iterationDuration() const;
   double activeDurationInternal() const;
   double endTimeInternal() const {
     return specifiedTiming().startDelay + activeDurationInternal() +
            specifiedTiming().endDelay;
   }
 
   const Animation* animation() const { return m_animation; }
   Animation* animation() { return m_animation; }
   const Timing& specifiedTiming() const { return m_timing; }
-  AnimationEffectTiming* timing();
+  virtual AnimationEffectTimingReadOnly* timing();
   void updateSpecifiedTiming(const Timing&);
 
   void getComputedTiming(ComputedTimingProperties&);
   ComputedTimingProperties getComputedTiming();
 
   DECLARE_VIRTUAL_TRACE();
 
  protected:
   explicit AnimationEffectReadOnly(const Timing&, EventDelegate* = nullptr);
 
@@ skipping 43 matching lines @@
   mutable bool m_needsUpdate;
   mutable double m_lastUpdateTime;
   String m_name;
 
   const CalculatedTiming& ensureCalculated() const;
 };
 
 }  // namespace blink
 
 #endif  // AnimationEffectReadOnly_h