Bug 640426 Search bar on Modern doesn't have the grooved box that the urlbar has. ui-r=Neil

suite/browser/navigator.xul

@@ -380,7 +380,7 @@
       </toolbaritem>
 
       <toolbaritem id="search-container" title="&searchItem.title;"
-                   align="center" class="chromeclass-toolbar-additional"
+                   align="center" class="chromeclass-toolbar-additional nav-bar-class"
                    flex="1" persist="width" removable="true">
         <searchbar id="searchbar" flex="1"/>
       </toolbaritem>