bug 157607 toolkit port: add a class to allow textboxes to specify that they are

URL inputs, which should be always left-to-right. r=mconnor

toolkit/content/xul.css

@@ -43,6 +43,17 @@ window[chromehidden~="toolbar"] .chromeclass-toolbar-additional
   display: none;
 }
 
+/* ::::::::::
+   :: Rules for forcing direction for entry and display of URIs
+   :: or URI elements
+   ::::: */
+
+textbox.uri-element,
+menulist.uri-element
+{
+  direction: ltr !important;
+}
+
 /****** elements that have no visual representation ******/
 
 script, data,