Plumb timeToNextEffect through players and animation

Source/core/animation/InertAnimation.h

Index: Source/core/animation/InertAnimation.h
diff --git a/Source/core/animation/InertAnimation.h b/Source/core/animation/InertAnimation.h
index 6cc2377d8239e6c37d7f4b856ba79f8d08184f8d..5b181ae4e6c150b39e52ac7f3498fdb8b8feabea 100644
--- a/Source/core/animation/InertAnimation.h
+++ b/Source/core/animation/InertAnimation.h
@@ -47,6 +47,7 @@ public:
 protected:
     virtual void updateChildrenAndEffects(bool) const OVERRIDE { };
     virtual void willDetach() OVERRIDE { };
+    virtual double calculateTimeToEffectChange(double inheritedTime, double activeTime, Phase) const OVERRIDE FINAL;
 
 private:
     InertAnimation(PassRefPtr<AnimationEffect>, const Timing&);