Add @abstract to allowed Closure linter tags

chrome/browser/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/PRESUBMIT.py
 """
 
 import regex_check
@@ skipping 167 matching lines @@
             '}.bind(' in error.token.line):
           return False
 
         return not is_grit_statement and error.code not in [
             errors.COMMA_AT_END_OF_LITERAL,
             errors.JSDOC_ILLEGAL_QUESTION_WITH_PIPE,
             errors.LINE_TOO_LONG,
             errors.MISSING_JSDOC_TAG_THIS,
         ]
 
-    # Whitelist Polymer-specific JsDoc tags.
-    gflags.FLAGS.custom_jsdoc_tags = ('group', 'element', 'attribute',
-                                      'default', 'polymerBehavior')
+    # Keep this in sync with third_party/closure_compiler/closure_args.gypi
+    gflags.FLAGS.custom_jsdoc_tags = (
+        'abstract',
+        'attribute',
+        'default',
+        'demo',
+        'element',
+        'group',
+        'hero',
+        'polymerBehavior'

[Dan Beam, 2016/07/11 21:13:26]

why, yes it could be related to this! :P

+        'status',
+        'submodule',
+    )
     error_handler = ErrorHandlerImpl(self.input_api.re)
     runner.Run(file_to_lint, error_handler, source=source)
     return error_handler.GetErrors()
 
   def RunChecks(self):
     """Check for violations of the Chromium JavaScript style guide. See
        http://chromium.org/developers/web-development-style-guide#TOC-JavaScript
     """
     results = []
 
@@ skipping 43 matching lines @@
         results.append(self._MakeErrorOrWarning(
             '\n'.join(error_lines), f.AbsoluteLocalPath()))
 
     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'))
 
     return results