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

Source/core/css/parser/CSSTokenizer.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/CSSTokenizer.h"
 
 namespace blink {
 #include "core/CSSTokenizerCodepoints.cpp"
 }
@@ skipping 130 matching lines @@
 }
 
 CSSParserToken CSSTokenizer::asterisk(UChar cc)
 {
     ASSERT(cc == '*');
     if (consumeIfNext('='))
         return CSSParserToken(SubstringMatchToken);
     return CSSParserToken(DelimiterToken, '*');
 }
 
+CSSParserToken CSSTokenizer::lessThan(UChar cc)
+{
+    ASSERT(cc == '<');
+    if (m_input.peek(0) == '!' && m_input.peek(1) == '-' && m_input.peek(2) == '-') {
+        consume(3);
+        return CSSParserToken(CDOToken);
+    }
+    return CSSParserToken(DelimiterToken, '<');
+}
+
 CSSParserToken CSSTokenizer::comma(UChar cc)
 {
     return CSSParserToken(CommaToken);
 }
 
 CSSParserToken CSSTokenizer::hyphenMinus(UChar cc)
 {
     if (nextCharsAreNumber(cc)) {
         reconsume(cc);
         return consumeNumericToken();
     }
+    if (m_input.peek(0) == '-' && m_input.peek(1) == '>') {
+        consume(2);
+        return CSSParserToken(CDCToken);
+    }
     if (nextCharsAreIdentifier(cc)) {
         reconsume(cc);
         return consumeIdentLikeToken();
     }
     return CSSParserToken(DelimiterToken, cc);
 }
 
 CSSParserToken CSSTokenizer::solidus(UChar cc)
 {
     if (consumeIfNext('*')) {
@@ skipping 521 matching lines @@
 
 bool CSSTokenizer::nextCharsAreIdentifier()
 {
     UChar first = consume();
     bool areIdentifier = nextCharsAreIdentifier(first);
     reconsume(first);
     return areIdentifier;
 }
 
 } // namespace blink