Web animations: Supply CSS transition easing

Source/core/animation/Animation.cpp

Index: Source/core/animation/Animation.cpp
diff --git a/Source/core/animation/Animation.cpp b/Source/core/animation/Animation.cpp
index 6488493e4eb68b64dc02c903182231cd5a563a82..880251699dea91558a3587606bd79c8c673a3313 100644
--- a/Source/core/animation/Animation.cpp
+++ b/Source/core/animation/Animation.cpp
@@ -127,7 +127,7 @@ void Animation::applyEffects(bool previouslyInEffect)
     double iteration = currentIteration();
     ASSERT(iteration >= 0);
     // FIXME: Handle iteration values which overflow int.
-    m_activeInterpolations = m_effect->sample(static_cast<int>(iteration), timeFraction());
+    m_activeInterpolations = m_effect->sample(static_cast<int>(iteration), timeFraction(), duration());
     if (player())
         m_target->setNeedsAnimationStyleRecalc();
 }