Add use counters for function values of easing

third_party/WebKit/Source/core/animation/EffectInput.cpp

Index: third_party/WebKit/Source/core/animation/EffectInput.cpp
diff --git a/third_party/WebKit/Source/core/animation/EffectInput.cpp b/third_party/WebKit/Source/core/animation/EffectInput.cpp
index 0df3f2f9202ac787f0102f647698e06e9dcda4ac..49038de6848d2b713f742645c3fc755e63816cea 100644
--- a/third_party/WebKit/Source/core/animation/EffectInput.cpp
+++ b/third_party/WebKit/Source/core/animation/EffectInput.cpp
@@ -196,7 +196,7 @@ EffectModel* EffectInput::convertArrayForm(Element& element, const Vector<Dictio
 
         String timingFunctionString;
         if (DictionaryHelper::get(keyframeDictionary, "easing", timingFunctionString)) {
-            if (RefPtr<TimingFunction> timingFunction = AnimationInputHelpers::parseTimingFunction(timingFunctionString))
+            if (RefPtr<TimingFunction> timingFunction = AnimationInputHelpers::parseTimingFunction(timingFunctionString, &element.document()))
                 keyframe->setEasing(timingFunction);
         }
 
@@ -237,7 +237,7 @@ EffectModel* EffectInput::convertObjectForm(Element& element, const Dictionary&
     String timingFunctionString;
     RefPtr<TimingFunction> timingFunction = nullptr;
     if (DictionaryHelper::get(keyframeDictionary, "easing", timingFunctionString))
-        timingFunction = AnimationInputHelpers::parseTimingFunction(timingFunctionString);
+        timingFunction = AnimationInputHelpers::parseTimingFunction(timingFunctionString, &element.document());
 
     ScriptValue scriptValue;
     bool frameHasOffset = DictionaryHelper::get(keyframeDictionary, "offset", scriptValue) && !scriptValue.isNull();