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

Source/build/scripts/make_css_tokenizer_codepoints.py

 #!/usr/bin/env python
 
 # 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.
 
 import in_generator
 import sys
 import os
 
@@ skipping 18 matching lines @@
     codepoints = {'(': 'leftParenthesis',
                   ')': 'rightParenthesis',
                   '[': 'leftBracket',
                   ']': 'rightBracket',
                   '{': 'leftBrace',
                   '}': 'rightBrace',
                   '+': 'plusOrFullStop',
                   '.': 'plusOrFullStop',
                   '-': 'hyphenMinus',
                   '*': 'asterisk',
+                  '<': 'lessThan',
                   ',': 'comma',
                   '/': 'solidus',
                   '\\': 'reverseSolidus',
                   ':': 'colon',
                   ';': 'semiColon',
                   '#': 'hash',
                   '^': 'circumflexAccent',
                   '$': 'dollarSign',
                   '|': 'verticalLine',
                   '~': 'tilde',
@@ skipping 44 matching lines @@
 
     def generate(self):
         array_size = 128  # SCHAR_MAX + 1
         token_lines = ['    &CSSTokenizer::%s,' % token_type(i)
                         if token_type(i) else '    0,'
                         for i in range(array_size)]
         return CPP_TEMPLATE.format(array_size=array_size, token_lines='\n'.join(token_lines), module_pyname=module_pyname)
 
 if __name__ == '__main__':
     in_generator.Maker(MakeCSSTokenizerCodePointsWriter).main(sys.argv)