Web Animation API: Add use counter for Animation constructors

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 f43bbb2644007abfc66f591b765189c21e3dd156..8b1bef214bb5a72c5ab83999e58ebeee5be34904 100644
--- a/Source/core/animation/Animation.cpp
+++ b/Source/core/animation/Animation.cpp
@@ -39,6 +39,7 @@
 #include "core/animation/KeyframeEffectModel.h"
 #include "core/animation/Player.h"
 #include "core/dom/Element.h"
+#include "core/frame/UseCounter.h"
 #include "core/rendering/RenderLayer.h"
 
 namespace WebCore {
@@ -66,16 +67,19 @@ PassRefPtr<Animation> Animation::create(Element* element, PassRefPtrWillBeRawPtr
 PassRefPtr<Animation> Animation::create(Element* element, const Vector<Dictionary>& keyframeDictionaryVector, const Dictionary& timingInputDictionary)
 {
     ASSERT(RuntimeEnabledFeatures::webAnimationsAPIEnabled());
+    UseCounter::count(element->document(), UseCounter::NewAnimationKeyframeListEffectObjectTiming);
     return create(element, EffectInput::convert(element, keyframeDictionaryVector), TimingInput::convert(timingInputDictionary));
 }
 PassRefPtr<Animation> Animation::create(Element* element, const Vector<Dictionary>& keyframeDictionaryVector, double duration)
 {
     ASSERT(RuntimeEnabledFeatures::webAnimationsAPIEnabled());
+    UseCounter::count(element->document(), UseCounter::NewAnimationKeyframeListEffectDoubleTiming);
     return create(element, EffectInput::convert(element, keyframeDictionaryVector), TimingInput::convert(duration));
 }
 PassRefPtr<Animation> Animation::create(Element* element, const Vector<Dictionary>& keyframeDictionaryVector)
 {
     ASSERT(RuntimeEnabledFeatures::webAnimationsAPIEnabled());
+    UseCounter::count(element->document(), UseCounter::NewAnimationKeyframeListEffectNoTiming);
     return create(element, EffectInput::convert(element, keyframeDictionaryVector), Timing());
 }