Split out CSSParser public API

Source/core/css/StyleSheetContents.cpp

Index: Source/core/css/StyleSheetContents.cpp
diff --git a/Source/core/css/StyleSheetContents.cpp b/Source/core/css/StyleSheetContents.cpp
index dca9ceae2a8d7843a8743e7429efbf7b823c5dcf..9a602a05ea7560a6457c7c50ca16bebc552ca9b2 100644
--- a/Source/core/css/StyleSheetContents.cpp
+++ b/Source/core/css/StyleSheetContents.cpp
@@ -21,12 +21,12 @@
 #include "config.h"
 #include "core/css/StyleSheetContents.h"
 
-#include "core/css/parser/BisonCSSParser.h"
 #include "core/css/CSSStyleSheet.h"
 #include "core/css/MediaList.h"
 #include "core/css/StylePropertySet.h"
 #include "core/css/StyleRule.h"
 #include "core/css/StyleRuleImport.h"
+#include "core/css/parser/CSSParser.h"
 #include "core/dom/Document.h"
 #include "core/dom/Node.h"
 #include "core/dom/StyleEngine.h"
@@ -327,8 +327,7 @@ void StyleSheetContents::parseAuthorStyleSheet(const CSSStyleSheetResource* cach
     String sheetText = cachedStyleSheet->sheetText(enforceMIMEType, &hasValidMIMEType);
 
     CSSParserContext context(parserContext(), UseCounter::getFrom(this));
-    BisonCSSParser p(context);
-    p.parseSheet(this, sheetText, TextPosition::minimumPosition(), 0, true);
+    CSSParser::parseSheet(context, this, sheetText, TextPosition::minimumPosition(), 0, true);
 
     // If we're loading a stylesheet cross-origin, and the MIME type is not standard, require the CSS
     // to at least start with a syntactically valid CSS rule.
@@ -350,8 +349,7 @@ bool StyleSheetContents::parseString(const String& sheetText)
 bool StyleSheetContents::parseStringAtPosition(const String& sheetText, const TextPosition& startPosition, bool createdByParser)
 {
     CSSParserContext context(parserContext(), UseCounter::getFrom(this));
-    BisonCSSParser p(context);
-    p.parseSheet(this, sheetText, startPosition, 0, createdByParser);
+    CSSParser::parseSheet(context, this, sheetText, startPosition, 0, createdByParser);
 
     return true;
 }