CSS Parser: Implement selector parsing [1/3]

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"
 #include "core/css/StyleSheetContents.h"
 #include "core/css/parser/CSSParserFastPaths.h"
 #include "core/css/parser/CSSParserImpl.h"
+#include "core/css/parser/CSSSelectorParser.h"
+#include "core/css/parser/CSSTokenizer.h"
 
 namespace blink {
 
 CSSParser::CSSParser(const CSSParserContext& context)
     : m_bisonParser(context)
 {
 }
 
 bool CSSParser::parseDeclaration(MutableStylePropertySet* propertySet, const String& declaration, CSSParserObserver* observer, StyleSheetContents* styleSheet)
 {
     // FIXME: Add inspector observer support in the new CSS parser
     if (!observer && RuntimeEnabledFeatures::newCSSParserEnabled())
         return CSSParserImpl::parseDeclaration(propertySet, declaration, m_bisonParser.m_context);
     return m_bisonParser.parseDeclaration(propertySet, declaration, observer, styleSheet);
 }
 
 void CSSParser::parseSelector(const String& selector, CSSSelectorList& selectorList)
 {
+    if (RuntimeEnabledFeatures::newCSSParserEnabled()) {
+        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)
 {
     return BisonCSSParser(context).parseRule(styleSheet, rule);
 }
 
 void CSSParser::parseSheet(const CSSParserContext& context, StyleSheetContents* styleSheet, const String& text, const TextPosition& startPosition, CSSParserObserver* observer, bool logErrors)
 {
@@ skipping 70 matching lines @@
 {
     return BisonCSSParser::colorFromRGBColorString(string);
 }
 
 bool CSSParser::parseSystemColor(RGBA32& color, const String& colorString)
 {
     return BisonCSSParser::parseSystemColor(color, colorString);
 }
 
 } // namespace blink