Bug 1233250: use correct string name for offline message r=me

MozReview-Commit-ID: CNf7cg0S1Zb

--HG--
extra : rebase_source : a15ea4c263e6e938091ad8396988ff0718056404
extra : amend_source : 53c817f0a9b5a9011f23c9bfce1f025010353cb8

mobile/android/chrome/content/browser.js

@@ -7283,7 +7283,7 @@ var Tabs = {
           if (isTopLevel && !targetURI.startsWith("about:")) {
             UITelemetry.addEvent("neterror.1", "toast", null, "usecache");
             Snackbars.show(
-              Strings.browser.GetStringFromName("networkOffline.message"),
+              Strings.browser.GetStringFromName("networkOffline.message2"),
               Snackbars.LENGTH_INDEFINITE,
               {
                 // link_blue