Bug 664669 - tab._tabViewTabIsRemovedAfterRestore should be attached to the tabItem rather than the xulTab; r=dao

browser/base/content/browser-tabview.js

@@ -368,8 +368,8 @@ let TabView = {
     if (this._window) {
       this._window.UI.restoredClosedTab = true;
 
-      if (blankTabToRemove)
-        blankTabToRemove._tabViewTabIsRemovedAfterRestore = true;
+      if (blankTabToRemove && blankTabToRemove._tabViewTabItem)
+        blankTabToRemove._tabViewTabItem.isRemovedAfterRestore = true;
     }
   },
 

browser/base/content/tabview/ui.js

@@ -763,8 +763,9 @@ let UI = {
           // 3) When a blank tab is active while restoring a closed tab the
           // blank tab gets removed. The active group is not closed as this is
           // where the restored tab goes. So do not show the TabView.
+          let tabItem = tab && tab._tabViewTabItem;
           let closingBlankTabAfterRestore =
-            (tab && tab._tabViewTabIsRemovedAfterRestore);
+            (tabItem && tabItem.isRemovedAfterRestore);
 
           if ((closingLastOfGroup || closingUnnamedGroup) &&
               !closingBlankTabAfterRestore) {