Web Animations: Don't compare start time for AnimationPlayer sorting

Source/core/animation/AnimationTimeline.cpp

 /*
  * 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 26 matching lines @@
 #include "core/frame/FrameView.h"
 #include "core/page/Page.h"
 #include "platform/TraceEvent.h"
 
 namespace blink {
 
 namespace {
 
 bool compareAnimationPlayers(const RefPtrWillBeMember<blink::AnimationPlayer>& left, const RefPtrWillBeMember<blink::AnimationPlayer>& right)
 {
-    return left->sortInfo().hasLowerSequenceNumber(right->sortInfo());
+    return AnimationPlayer::hasLowerPriority(left.get(), right.get());
 }
 
 }
 
 // This value represents 1 frame at 30Hz plus a little bit of wiggle room.
 // TODO: Plumb a nominal framerate through and derive this value from that.
 const double AnimationTimeline::s_minimumDelay = 0.04;
 
 
 PassRefPtrWillBeRawPtr<AnimationTimeline> AnimationTimeline::create(Document* document, PassOwnPtrWillBeRawPtr<PlatformTiming> timing)
@@ skipping 190 matching lines @@
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_document);
     visitor->trace(m_timing);
     visitor->trace(m_playersNeedingUpdate);
     visitor->trace(m_players);
 #endif
 }
 
 } // namespace