Set mobile attribute if the browser is chrome.

Important to know, as chrome can run on mobile as well as desktops.

bowser.js

@@ -54,6 +54,7 @@
       }
     if (chrome) return {
         webkit: t
+      , mobile: iphone || ipad || android
       , chrome: t
       , version: ua.match(/chrome\/(\d+(\.\d+)?)/i)[1]
       }