Add use counters for function values of easing

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

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 178 matching lines @@
         }
 
         String compositeString;
         DictionaryHelper::get(keyframeDictionary, "composite", compositeString);
         if (compositeString == "add")
             keyframe->setComposite(EffectModel::CompositeAdd);
         // TODO(alancutter): Support "accumulate" keyframe composition.
 
         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);
         }
 
         Vector<String> keyframeProperties;
         keyframeDictionary.getPropertyNames(keyframeProperties);
         for (const auto& property : keyframeProperties) {
             if (property == "offset"
                 || property == "composite"
                 || property == "easing") {
                 continue;
@@ skipping 20 matching lines @@
 }
 
 EffectModel* EffectInput::convertObjectForm(Element& element, const Dictionary& keyframeDictionary, ExceptionState& exceptionState)
 {
     StringKeyframeVector keyframes;
     bool encounteredCompositableProperty = false;
 
     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();
     double offset = 0.0;
     if (frameHasOffset && !getAndCheckOffset(keyframeDictionary, offset, 0.0, exceptionState))
         return nullptr;
 
     String compositeString;
     DictionaryHelper::get(keyframeDictionary, "composite", compositeString);
 
@@ skipping 36 matching lines @@
             keyframes.append(keyframe);
         }
     }
 
     std::sort(keyframes.begin(), keyframes.end(), compareKeyframes);
 
     return createEffectModelFromKeyframes(element, keyframes, encounteredCompositableProperty, exceptionState);
 }
 
 } // namespace blink