Web Animations: Overhaul and trace play state in AnimationPlayer

Source/core/animation/AnimationStackTest.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/animation/AnimationStack.h"
 
 #include "core/animation/ActiveAnimations.h"
 #include "core/animation/AnimationClock.h"
 #include "core/animation/AnimationTimeline.h"
@@ skipping 10 matching lines @@
     {
         document = Document::create();
         document->animationClock().resetTimeForTesting();
         timeline = AnimationTimeline::create(document.get());
         element = document->createElement("foo", ASSERT_NO_EXCEPTION);
     }
 
     AnimationPlayer* play(Animation* animation, double startTime)
     {
         AnimationPlayer* player = timeline->createAnimationPlayer(animation);
-        player->setStartTimeInternal(startTime);
+        player->setStartTime(startTime * 1000);
         player->update(TimingUpdateOnDemand);
         return player;
     }
 
     void updateTimeline(double time)
     {
         document->animationClock().updateTime(time);
         timeline->serviceAnimations(TimingUpdateForAnimationFrame);
     }
 
@@ skipping 103 matching lines @@
     EXPECT_EQ(2u, effects().size());
 
     updateTimeline(17);
     Heap::collectAllGarbage();
     interpolations = AnimationStack::activeInterpolations(&element->activeAnimations()->defaultStack(), 0, 0, Animation::DefaultPriority, 0);
     EXPECT_TRUE(interpolationValue(interpolations.get(CSSPropertyFontSize))->equals(AnimatableDouble::create(3).get()));
     EXPECT_EQ(1u, effects().size());
 }
 
 }