Revert of Revert of Split out CSSParser public API

Source/core/css/CSSGroupingRule.cpp

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Apple 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:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
@@ skipping 14 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/css/CSSGroupingRule.h"
 
 #include "bindings/core/v8/ExceptionState.h"
-#include "core/css/parser/BisonCSSParser.h"
 #include "core/css/CSSRuleList.h"
 #include "core/css/CSSStyleSheet.h"
+#include "core/css/parser/CSSParser.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/frame/UseCounter.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace blink {
 
 CSSGroupingRule::CSSGroupingRule(StyleRuleGroup* groupRule, CSSStyleSheet* parent)
     : CSSRule(parent)
     , m_groupRule(groupRule)
     , m_childRuleCSSOMWrappers(groupRule->childRules().size())
@@ skipping 15 matching lines @@
 {
     ASSERT(m_childRuleCSSOMWrappers.size() == m_groupRule->childRules().size());
 
     if (index > m_groupRule->childRules().size()) {
         exceptionState.throwDOMException(IndexSizeError, "the index " + String::number(index) + " must be less than or equal to the length of the rule list.");
         return 0;
     }
 
     CSSStyleSheet* styleSheet = parentStyleSheet();
     CSSParserContext context(parserContext(), UseCounter::getFrom(styleSheet));
-    BisonCSSParser parser(context);
-    RefPtrWillBeRawPtr<StyleRuleBase> newRule = parser.parseRule(styleSheet ? styleSheet->contents() : 0, ruleString);
+    RefPtrWillBeRawPtr<StyleRuleBase> newRule = CSSParser::parseRule(context, styleSheet ? styleSheet->contents() : 0, ruleString);
     if (!newRule) {
         exceptionState.throwDOMException(SyntaxError, "the rule '" + ruleString + "' is invalid and cannot be parsed.");
         return 0;
     }
 
     if (newRule->isImportRule()) {
         // FIXME: an HierarchyRequestError should also be thrown for a @charset or a nested
         // @media rule. They are currently not getting parsed, resulting in a SyntaxError
         // to get raised above.
         exceptionState.throwDOMException(HierarchyRequestError, "'@import' rules cannot be inserted inside a group rule.");
@@ skipping 72 matching lines @@
 {
     CSSRule::trace(visitor);
 #if ENABLE(OILPAN)
     visitor->trace(m_childRuleCSSOMWrappers);
 #endif
     visitor->trace(m_groupRule);
     visitor->trace(m_ruleListCSSOMWrapper);
 }
 
 } // namespace blink