Revert of Revert of Split out CSSParser public API

Source/web/WebSelector.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 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * 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 "public/web/WebSelector.h"
 
 #include "core/css/CSSSelectorList.h"
-#include "core/css/parser/BisonCSSParser.h"
+#include "core/css/parser/CSSParser.h"
 #include "public/platform/WebString.h"
 
 namespace blink {
 
 WebString canonicalizeSelector(WebString webSelector, WebSelectorType restriction)
 {
-    BisonCSSParser parser(strictCSSParserContext());
+    CSSParser parser(strictCSSParserContext());
     CSSSelectorList selectorList;
     parser.parseSelector(webSelector, selectorList);
 
     if (restriction == WebSelectorTypeCompound) {
         for (const CSSSelector* selector = selectorList.first(); selector; selector = selectorList.next(*selector)) {
             if (!selector->isCompound())
                 return WebString();
         }
     }
     return selectorList.selectorsText();
 }
 
 } // namespace blink