Web Animations: Fix elpasedTime in animation events

Source/core/animation/TimedItem.h

Index: Source/core/animation/TimedItem.h
diff --git a/Source/core/animation/TimedItem.h b/Source/core/animation/TimedItem.h
index 501a71170224154f1a2230bacd501a110f04793e..6cb108be2844e472f010e31091fca90122eeb56f 100644
--- a/Source/core/animation/TimedItem.h
+++ b/Source/core/animation/TimedItem.h
@@ -38,6 +38,7 @@
 namespace WebCore {
 
 class Player;
+class TimedItem;
 
 static inline bool isNull(double value)
 {
@@ -63,7 +64,7 @@ public:
     class EventDelegate {
     public:
         virtual ~EventDelegate() { };
-        virtual void onEventCondition(bool isFirstSample, Phase previousPhase, Phase currentPhase, double previousIteration, double currentIteration) = 0;
+        virtual void onEventCondition(const TimedItem*, bool isFirstSample, Phase previousPhase, double previousIteration) = 0;
     };
 
     virtual ~TimedItem() { }
@@ -78,7 +79,9 @@ public:
     double currentIteration() const { return ensureCalculated().currentIteration; }
     double activeDuration() const { return ensureCalculated().activeDuration; }
     double timeFraction() const { return ensureCalculated().timeFraction; }
-    Player* player() const { return m_player; }
+    const Player* player() const { return m_player; }
+
+    const Timing& specified() const { return m_specified; }
 
 protected:
     TimedItem(const Timing&, PassOwnPtr<EventDelegate> = nullptr);