web_dev_style: add check for ending jsdoc comments with **/ instead of */.

chrome/browser/resources/web_dev_style/js_checker.py

 # Copyright (c) 2012 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.
 
 """Presubmit script for Chromium JS resources.
 
 See chrome/browser/resources/PRESUBMIT.py
 """
 
 class JSChecker(object):
@@ skipping 32 matching lines @@
 
   def ConstCheck(self, i, line):
     """Check for use of the 'const' keyword."""
     if self.input_api.re.search(r'\*\s+@const', line):
       # Probably a JsDoc line
       return ''
 
     return self.RegexCheck(i, line, r'(?:^|\s|\()(const)\s',
         'Use /** @const */ var varName; instead of const varName;')
 
+  def EndJsDocCommentCheck(self, i, line):
+    msg = 'End JSDoc comments with */ instead of **/'
+    def _check(regex):
+      return self.RegexCheck(i, line, regex, msg)
+    return _check(r'^\s*(\*\*/)\s*$') or _check(r'/\*\* @[a-zA-Z]+.* (\*\*/)')
+
   def GetElementByIdCheck(self, i, line):
     """Checks for use of 'document.getElementById' instead of '$'."""
     return self.RegexCheck(i, line, r"(document\.getElementById)\('",
         "Use $('id'), from chrome://resources/js/util.js, instead of "
         "document.getElementById('id')")
 
   def InheritDocCheck(self, i, line):
     """Checks for use of '@inheritDoc' instead of '@override'."""
     return self.RegexCheck(i, line, r"\* (@inheritDoc)",
         "@inheritDoc is deprecated, use @override instead")
@@ skipping 177 matching lines @@
 
     if results:
       results.append(self.output_api.PresubmitNotifyResult(
           'See the JavaScript style guide at '
           'http://www.chromium.org/developers/web-development-style-guide'
           '#TOC-JavaScript and if you have any feedback about the JavaScript '
           'PRESUBMIT check, contact tbreisacher@chromium.org or '
           'dbeam@chromium.org'))
 
     return results