Bug 1345773 - Don't call updatePreview for TabAttrModified events for the "select" attribute, r=dao

MozReview-Commit-ID: 9GSnGxJoNne

--HG--
extra : rebase_source : 0ecdc19cc6d28c60ab8cc13447db1186225dbb56

browser/base/content/browser-ctrlTab.js

@@ -474,10 +474,10 @@ var ctrlTab = {
         this._initRecentlyUsedTabs();
         break;
       case "TabAttrModified":
-        // tab attribute modified (i.e. label, busy, image, selected)
+        // tab attribute modified (i.e. label, busy, image)
         // update preview only if tab attribute modified in the list
         if (event.detail.changed.some(
-          (elem, ind, arr) => ["label", "busy", "image", "selected"].includes(elem))) {
+          (elem, ind, arr) => ["label", "busy", "image"].includes(elem))) {
           for (let i = this.previews.length - 1; i >= 0; i--) {
             if (this.previews[i]._tab && this.previews[i]._tab == event.target) {
               this.updatePreview(this.previews[i], event.target);