Stop using old-style promises module in about:newtab.

- Rewrite to arrow functions.
- Stop using .defer and .promised

Tag #517.

1 files changed, 12 insertions, 12 deletions

diff --git a/application/palemoon/base/content/newtab/transformations.js b/application/palemoon/base/content/newtab/transformations.js
index 0711d7d0a..4fb565fb9 100644
--- a/application/palemoon/base/content/newtab/transformations.js
+++ b/application/palemoon/base/content/newtab/transformations.js
@@ -179,23 +179,23 @@ var gTransformation = {
       if (!aSite || aSite == gDrag.draggedSite)
         return;
 
-      let deferred = Promise.defer();
-      batch.push(deferred.promise);
-      let cb = function () deferred.resolve();
-
-      if (!cells[aIndex])
+      batch.push(new Promise(resolve => {
+        if (!cells[aIndex]) {
         // The site disappeared from the grid, hide it.
-        this.hideSite(aSite, cb);
-      else if (this._getNodeOpacity(aSite.node) != 1)
+          this.hideSite(aSite, resolve);
+        } else if (this._getNodeOpacity(aSite.node) != 1) {
         // The site disappeared before but is now back, show it.
-        this.showSite(aSite, cb);
-      else
+          this.showSite(aSite, resolve);
+        } else {
         // The site's position has changed, move it around.
-        this._moveSite(aSite, aIndex, {unfreeze: unfreeze, callback: cb});
+          this._moveSite(aSite, aIndex, {unfreeze: unfreeze, callback: resolve});
+        }
+      }));
     }, this);
 
-    let wait = Promise.promised(function () callback && callback());
-    wait.apply(null, batch);
+    if (callback) {
+      Promise.all(batch).then(callback);
+    }
   },
 
   /**