Bug 1207499 - Part 2: Remove use of expression closure from chrome/. r=bsmedberg

--HG--
extra : commitid : B3Kz42PIjFM
extra : rebase_source : 6763c41eae9b70fada45f84ff7a7d8664a0aaa12

chrome/test/unit/test_no_remote_registration.js

@@ -51,7 +51,7 @@ function ProtocolHandler(aScheme, aFlags)
 ProtocolHandler.prototype =
 {
   defaultPort: -1,
-  allowPort: function() false,
+  allowPort: () => false,
   newURI: function(aSpec, aCharset, aBaseURI)
   {
     let uri = Cc["@mozilla.org/network/standard-url;1"].