CSS Parser: Implement parseRule

Source/core/css/parser/CSSParser.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/css/parser/CSSParser.h"
 
 #include "core/css/CSSKeyframeRule.h"
 #include "core/css/StyleColor.h"
 #include "core/css/StyleRule.h"
@@ skipping 24 matching lines @@
         Vector<CSSParserToken> tokens;
         CSSTokenizer::tokenize(selector, tokens);
         CSSSelectorParser::parseSelector(tokens, m_bisonParser.m_context, selectorList);
         return;
     }
     m_bisonParser.parseSelector(selector, selectorList);
 }
 
 PassRefPtrWillBeRawPtr<StyleRuleBase> CSSParser::parseRule(const CSSParserContext& context, StyleSheetContents* styleSheet, const String& rule)
 {
+    if (RuntimeEnabledFeatures::newCSSParserEnabled())
+        return CSSParserImpl::parseRule(rule, context);
     return BisonCSSParser(context).parseRule(styleSheet, rule);
 }
 
 void CSSParser::parseSheet(const CSSParserContext& context, StyleSheetContents* styleSheet, const String& text, const TextPosition& startPosition, CSSParserObserver* observer, bool logErrors)
 {
     BisonCSSParser(context).parseSheet(styleSheet, text, startPosition, observer, logErrors);
 }
 
 bool CSSParser::parseValue(MutableStylePropertySet* declaration, CSSPropertyID propertyID, const String& string, bool important, CSSParserMode parserMode, StyleSheetContents* styleSheet)
 {
@@ skipping 65 matching lines @@
 {
     return BisonCSSParser::colorFromRGBColorString(string);
 }
 
 bool CSSParser::parseSystemColor(RGBA32& color, const String& colorString)
 {
     return BisonCSSParser::parseSystemColor(color, colorString);
 }
 
 } // namespace blink