web_dev_style: make <label for=""> check ignore <paper-tooltip for="">

chrome/browser/web_dev_style/html_checker.py

 # 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.
 
 """
 Presubmit for Chromium HTML resources. See chrome/browser/PRESUBMIT.py.
 """
 
 import regex_check
 
@@ skipping 49 matching lines @@
         (?:^|\s)                      # start of line or whitespace
         i18n-content="                # i18n-content="
         ([A-Z][^"]*|[^"]*[-_][^"]*)"  # starts with caps or contains '-' or '_'
         """,
         self.input_api.re.VERBOSE)
     return regex_check.RegexCheck(self.input_api.re, line_number, line, regex,
         "For i18n-content use javaScriptCase.")
 
   def LabelCheck(self, line_number, line):
     regex = self.input_api.re.compile("""
-        (?:^|\s) # start of line or whitespace
-        (for=)   # for=
+        (?:^|\s)     # start of line or whitespace
+        <label[^>]+? # <label tag
+        (for=)       # for=
         """,
         self.input_api.re.VERBOSE)
     return regex_check.RegexCheck(self.input_api.re, line_number, line, regex,
         "Avoid 'for' attribute on <label>. Place the input within the <label>, "
         "or use aria-labelledby for <select>.")
 
   def RunChecks(self):
     """Check for violations of the Chromium web development style guide. See
        http://chromium.org/developers/web-development-style-guide
     """
@@ skipping 15 matching lines @@
             self.LabelCheck(line_number, line),
         ]))
 
       if errors:
         abs_local_path = f.AbsoluteLocalPath()
         file_indicator = 'Found HTML style issues in %s' % abs_local_path
         prompt_msg = file_indicator + '\n\n' + '\n'.join(errors) + '\n'
         results.append(self.output_api.PresubmitPromptWarning(prompt_msg))
 
     return results