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

remoting/webapp/verify-webapp.py

Index: remoting/webapp/verify-webapp.py
diff --git a/remoting/webapp/verify-webapp.py b/remoting/webapp/verify-webapp.py
index 038de019cdfa38bd909b011307d7bb1b6b77b583..13883eec66c64c29188449a47f19fbb78f3bc751 100755
--- a/remoting/webapp/verify-webapp.py
+++ b/remoting/webapp/verify-webapp.py
@@ -13,6 +13,7 @@ annotated with the string "i18n-content", for example:
 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
@@ -39,9 +40,12 @@ 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)