[WebUI] Fix rest of CSS style nits in misc. dirs so I can turn on CSS checker.

chrome/browser/resources/web_dev_style/css_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 WebUI resources.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into gcl/git cl, and see
 http://www.chromium.org/developers/web-development-style-guide for the rules
 we're checking against here.
@@ skipping 103 matching lines @@
     def suggest_rgb_from_hex(line):
       suggestions = ['rgb(%d, %d, %d)' % _rgb_from_hex(h.group(1))
           for h in re.finditer(hex_reg, line)]
       return ' (replace with %s)' % ', '.join(suggestions)
 
     def suggest_short_hex(line):
       h = re.search(hex_reg, line).group(1)
       return ' (replace with #%s)' % (h[0] + h[2] + h[4])
 
     hsl = r'hsl\([^\)]*(?:[, ]|(?<=\())(?:0?\.?)?0%'
-    zeros = (r'[^0-9]0(?:\.0?)?'
-             r'(?:px|em|%|in|cm|mm|pc|pt|ex|deg|g?rad|m?s|k?hz)'
-             r'(?!\s*\{)')
+    zeros = (r'(?:^|\D)'
+             r'(?:\.0|0(?:\.0?|px|em|%|in|cm|mm|pc|pt|ex|deg|g?rad|m?s|k?hz))'
+             r'(?:\D|$)(?!\s*\{)')
     def zero_length_values(line):
       return (re.search(zeros, line) and not re.search(hsl, line))
 
     added_or_modified_files_checks = [
         { 'desc': 'Alphabetize properties and list vendor specific (i.e. '
                   '-webkit) above standard.',
           'test': alphabetize_props,
           'multiline': True,
         },
         { 'desc': 'Start braces ({) end a selector, have a space before them '
@@ skipping 79 matching lines @@
             '%s:\n%s' % (f[0], '\n\n'.join(file_errors))))
 
     if results:
       # Add your name if you're here often mucking around in the code.
       authors = ['dbeam@chromium.org']
       results.append(self.output_api.PresubmitNotifyResult(
           'Was the CSS checker useful? Send feedback or hate mail to %s.' %
           ', '.join(authors)))
 
     return results