Remove 'Enable' button on unsupported platforms. Added 'No hosts' message.

remoting/webapp/verify-webapp.py

 #!/usr/bin/env python
 # Copyright (c) 2011 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.
 
 """Verifies that a given messages.json file defines all the strings used by the
 a given set of files. For file formats where it is not possible to infer which
 strings represent message identifiers, localized strings should be explicitly
 annotated with the string "i18n-content", for example:
 
   LocalizeString(/*i18n-content*/"PRODUCT_NAME");
 
 This script also recognises localized strings in HTML and manifest.json files:
 
   HTML:          <span i18n-content="PRODUCT_NAME"></span>
+              or ...i18n-value-name-1="BUTTON_NAME"...
   manifest.json: __MSG_PRODUCT_NAME__
 
 Note that these forms must be exact; extra spaces are not permitted, though
 either single or double quotes are recognized.
 
 In addition, the script checks that all the messages are still in use; if
 this is not the case then a warning is issued, but the script still succeeds.
 """
 
 import json
 import os
 import re
 import sys
 
 all_tags = set([])
 
 WARNING_MESSAGE = """
 To remove this warning, either remove the unused tags from
 messages.json, add the files that use the tags listed above to
 remoting.gyp, or annotate existing uses of those tags with the
 prefix /*i18n-content*/
 """
 
 
 def ExtractTagFromLine(line):
   """Extract a tag from a line of HTML, C++, JS or JSON."""
-  # HTML-style
+  # HTML-style (tags)
   m = re.search('i18n-content=[\'"]([^\'"]*)[\'"]', line)
   if m: return m.group(1)
+  # HTML-style (substitutions)
+  m = re.search('i18n-value-name-[1-9]=[\'"]([^\'"]*)[\'"]', line)
+  if m: return m.group(1)
   # C++/Javascript style
   m = re.search('/\*i18n-content\*/[\'"]([^\`"]*)[\'"]', line)
   if m: return m.group(1)
   # Manifest style
   m = re.search('__MSG_(.*)__', line)
   if m: return m.group(1)
   return None
 
 
 def CheckFileForUnknownTag(filename, messages):
@@ skipping 44 matching lines @@
   if exit_code == 0:
     f = open(touch_file, 'a')
     f.close()
     os.utime(touch_file, None)
 
   return exit_code
 
 
 if __name__ == '__main__':
   sys.exit(main())