Web Animations CSS: Unfreeze AnimationClock if sampling timelines does not trigger style recalc

Source/core/animation/AnimationClock.h

Index: Source/core/animation/AnimationClock.h
diff --git a/Source/core/animation/AnimationClock.h b/Source/core/animation/AnimationClock.h
index c2585db794f332716460609babf6fd11da7c3aad..1ce539bc115d9fcdd600e947e81692fb6846207e 100644
--- a/Source/core/animation/AnimationClock.h
+++ b/Source/core/animation/AnimationClock.h
@@ -45,7 +45,6 @@ public:
 
     void updateTime(double time)
     {
-        ASSERT(m_time <= time);

[Timothy Loh, 2013/10/30 03:55:07]

Could you mention why  we're removing this assertion?

[Steve Block, 2013/11/01 03:04:59]

I removed it because we were hitting it in some unit tests. But it turns out
that we no longer do so in the latest version. Will reinstate.

         m_time = time;
         m_frozen = true;
     }