Move chrome/browser/web_dev_style/ to tools/ to use from more places

chrome/browser/web_dev_style/regex_check.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.
-
-
-def RegexCheck(re, line_number, line, regex, msg):
-  """Searches for |regex| in |line| to check for a particular style
-     violation, returning a message like the one below if the regex matches.
-     The |regex| must have exactly one capturing group so that the relevant
-     part of |line| can be highlighted. If more groups are needed, use
-     "(?:...)" to make a non-capturing group. Sample message:
-
-       line 6: Use var instead of const.
-           const foo = bar();
-           ^^^^^
-  """
-
-  def _highlight(match):
-    """Takes a start position and a length, and produces a row of '^'s to
-       highlight the corresponding part of a string.
-    """
-    return match.start(1) * ' ' + (match.end(1) - match.start(1)) * '^'
-
-  match = re.search(regex, line)
-  if match:
-    assert len(match.groups()) == 1
-    return '  line %d: %s\n%s\n%s' % (line_number, msg, line, _highlight(match))
-  return ''