Bug 1581588 - remove unnecessary moz-binding style from richlistitems r=bgrins

Differential Revision: https://phabricator.services.mozilla.com/D46158

--HG--
extra : moz-landing-system : lando

browser/base/content/browser.css

@@ -387,7 +387,7 @@ toolbarpaletteitem {
   #urlbar-contextual-tip-icon {
     background-image: var(--webextension-contextual-tip-icon-2x);
   }
-  
+
   :root[lwt-popup-brighttext] #urlbar-contextual-tip-icon {
     background-image: var(--webextension-contextual-tip-icon-2x-light);
   }
@@ -670,7 +670,6 @@ toolbar:not(#TabsToolbar) > #personal-bookmarks {
 }
 
 #PopupAutoComplete > richlistbox > richlistitem[originaltype="insecureWarning"] {
-  -moz-binding: none;
   height: auto;
 }
 

browser/components/downloads/content/downloads.css

@@ -29,21 +29,6 @@
 
 /*** Downloads View ***/
 
-/**
- * The downloads richlistbox may list thousands of items, and it turns out
- * XBL binding attachment, and even more so detachment, is a performance hog.
- * This hack makes sure we don't apply any binding to inactive items (inactive
- * items are history downloads that haven't been in the visible area).
- * We can do this because the richlistbox implementation does not interact
- * much with the richlistitem binding.  However, this may turn out to have
- * some side effects (see bug 828111 for the details).
- *
- * We might be able to do away with this workaround once bug 653881 is fixed.
- */
-#downloadsRichListBox > richlistitem:not([active]) {
-  -moz-binding: none;
-}
-
 #downloadsRichListBox > richlistitem button {
   /* These buttons should never get focus, as that would "disable"
      the downloads view controller (it's only used when the richlistbox

browser/components/preferences/handlers.css

@@ -2,10 +2,6 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#containersView > richlistitem {
-  -moz-binding: none;
-}
-
 /**
  * Make the icons appear.
  * Note: we display the icon box for every item whether or not it has an icon

browser/extensions/formautofill/content/formautofill.css

@@ -11,7 +11,6 @@
   padding: 0;
   height: auto;
   min-height: auto;
-  -moz-binding: none;
 }
 
 /* Treat @collpased="true" as display: none similar to how it is for XUL elements.

toolkit/content/xul.css

@@ -485,7 +485,6 @@ panel[type="autocomplete-richlistbox"] {
 }
 
 .autocomplete-richlistitem {
-  -moz-binding: none;
   -moz-box-orient: vertical;
   -moz-box-align: center;
   overflow: -moz-hidden-unscrollable;