CSS Parser: Support CDO and CDC tokens (<!--, -->)

Source/core/css/parser/CSSTokenizer.h

 // 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.
 
 #ifndef CSSTokenizer_h
 #define CSSTokenizer_h
 
 #include "core/css/parser/CSSParserToken.h"
 #include "core/html/parser/InputStreamPreprocessor.h"
 #include "wtf/text/WTFString.h"
@@ skipping 52 matching lines @@
     CSSParserToken leftParenthesis(UChar);
     CSSParserToken rightParenthesis(UChar);
     CSSParserToken leftBracket(UChar);
     CSSParserToken rightBracket(UChar);
     CSSParserToken leftBrace(UChar);
     CSSParserToken rightBrace(UChar);
     CSSParserToken plusOrFullStop(UChar);
     CSSParserToken comma(UChar);
     CSSParserToken hyphenMinus(UChar);
     CSSParserToken asterisk(UChar);
+    CSSParserToken lessThan(UChar);
     CSSParserToken solidus(UChar);
     CSSParserToken colon(UChar);
     CSSParserToken semiColon(UChar);
     CSSParserToken hash(UChar);
     CSSParserToken circumflexAccent(UChar);
     CSSParserToken dollarSign(UChar);
     CSSParserToken verticalLine(UChar);
     CSSParserToken tilde(UChar);
     CSSParserToken commercialAt(UChar);
     CSSParserToken reverseSolidus(UChar);
     CSSParserToken asciiDigit(UChar);
     CSSParserToken letterU(UChar);
     CSSParserToken nameStart(UChar);
     CSSParserToken stringStart(UChar);
     CSSParserToken endOfFile(UChar);
 
     CSSTokenizerInputStream& m_input;
 };
 
 
 
 } // namespace blink
 
 #endif // CSSTokenizer_h