[WIP] bindings: Introduce PropertyBag

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 40 matching lines @@
         return nullptr;
 
     StyleSheetContents* styleSheetContents = element->document().elementSheet().contents();
     StringKeyframeVector keyframes;
     double lastOffset = 0;
 
     for (size_t i = 0; i < keyframeDictionaryVector.size(); ++i) {
         RefPtrWillBeRawPtr<StringKeyframe> keyframe = StringKeyframe::create();
 
         ScriptValue scriptValue;
-        bool frameHasOffset = DictionaryHelper::get(keyframeDictionaryVector[i], "offset", scriptValue) && !scriptValue.isNull();
+        bool frameHasOffset = keyframeDictionaryVector[i].get("offset", scriptValue) && !scriptValue.isNull();
 
         if (frameHasOffset) {
             double offset;
-            DictionaryHelper::get(keyframeDictionaryVector[i], "offset", offset);
+            keyframeDictionaryVector[i].get("offset", offset);
 
             // Keyframes with offsets outside the range [0.0, 1.0] are an error.
             if (std::isnan(offset)) {
                 exceptionState.throwDOMException(InvalidModificationError, "Non numeric offset provided");
             }
 
             if (offset < 0 || offset > 1) {
                 exceptionState.throwDOMException(InvalidModificationError, "Offsets provided outside the range [0, 1]");
                 return nullptr;
             }
 
             if (offset < lastOffset) {
                 exceptionState.throwDOMException(InvalidModificationError, "Keyframes with specified offsets are not sorted");
                 return nullptr;
             }
 
             lastOffset = offset;
 
             keyframe->setOffset(offset);
         }
         keyframes.append(keyframe);
 
         String compositeString;
-        DictionaryHelper::get(keyframeDictionaryVector[i], "composite", compositeString);
+        keyframeDictionaryVector[i].get("composite", compositeString);
         if (compositeString == "add")
             keyframe->setComposite(AnimationEffect::CompositeAdd);
 
         String timingFunctionString;
-        if (DictionaryHelper::get(keyframeDictionaryVector[i], "easing", timingFunctionString)) {
+        if (keyframeDictionaryVector[i].get("easing", timingFunctionString)) {
             if (RefPtrWillBeRawPtr<CSSValue> timingFunctionValue = BisonCSSParser::parseAnimationTimingFunctionValue(timingFunctionString))
                 keyframe->setEasing(CSSToStyleMap::mapAnimationTimingFunction(timingFunctionValue.get(), true));
         }
 
         Vector<String> keyframeProperties;
         keyframeDictionaryVector[i].getOwnPropertyNames(keyframeProperties);
         for (size_t j = 0; j < keyframeProperties.size(); ++j) {
             String property = keyframeProperties[j];
             CSSPropertyID id = camelCaseCSSPropertyNameToID(property);
             if (id == CSSPropertyInvalid)
                 continue;
             String value;
-            DictionaryHelper::get(keyframeDictionaryVector[i], property, value);
+            keyframeDictionaryVector[i].get(property, value);
             keyframe->setPropertyValue(id, value, styleSheetContents);
         }
     }
 
     RefPtrWillBeRawPtr<StringKeyframeEffectModel> keyframeEffectModel = StringKeyframeEffectModel::create(keyframes);
     if (!keyframeEffectModel->isReplaceOnly()) {
         exceptionState.throwDOMException(NotSupportedError, "Partial keyframes are not supported.");
         return nullptr;
     }
     keyframeEffectModel->forceConversionsToAnimatableValues(element);
 
     return keyframeEffectModel;
 }
 
 } // namespace blink