Bug 543206 followup: revert adjustTabstrip change, re-enable test_tabbrowser.xul

accessible/tests/mochitest/tree/test_tabbrowser.xul

@@ -91,7 +91,7 @@
           }
         ]
       };
-      //testAccessibleTree(getNode("tabbrowser").tabContainer, tabsAccTree);
+      testAccessibleTree(getNode("tabbrowser").tabContainer, tabsAccTree);
 
       var tabboxAccTree = {
         role: ROLE_PANE,

browser/base/content/tabbrowser.xml

@@ -1257,6 +1257,8 @@
             if (t.previousSibling.selected)
               t.setAttribute("afterselected", true);
 
+            this.tabContainer.adjustTabstrip();
+
             // Dispatch a new tab notification.  We do this once we're
             // entirely done, so that things are in a consistent state
             // even if the event listener opens or closes tabs.
@@ -2747,7 +2749,6 @@
             return;
 
           if (tab.getAttribute("selected") == "true") {
-            this.adjustTabstrip();
             this._fillTrailingGap();
             this._handleTabSelect();
           } else {