DevTools: [CodeMirror] add comment plugin

Source/devtools/devtools.gyp

 #
 # 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 314 matching lines @@
             'front_end/AuditResultView.js',
             'front_end/AuditRules.js',
             'front_end/AuditsPanel.js',
         ],
 
         'devtools_codemirror_js_files': [
             'front_end/CodeMirrorTextEditor.js',
             'front_end/cm/codemirror.js',
             'front_end/cm/css.js',
             'front_end/cm/showhint.js',
+            'front_end/cm/comment.js',
             'front_end/cm/htmlmixed.js',
             'front_end/cm/closebrackets.js',
             'front_end/cm/matchbrackets.js',
             'front_end/cm/javascript.js',
             'front_end/cm/xml.js',
             'front_end/cm/markselection.js',
         ],
 
         'devtools_modules_js_files': [
             '<@(devtools_elements_js_files)',
@@ skipping 532 matching lines @@
                         'destination': '<(PRODUCT_DIR)/resources/inspector',
                         'files': [
                             '<@(devtools_standalone_files)',
                         ],
                     }],
                 },
             ],
         }],
     ], # conditions
 }