Call prepareSort before any sorting happens.

chrome/browser/resources/shared/js/cr/ui/array_data_model.js

Index: chrome/browser/resources/shared/js/cr/ui/array_data_model.js
diff --git a/chrome/browser/resources/shared/js/cr/ui/array_data_model.js b/chrome/browser/resources/shared/js/cr/ui/array_data_model.js
index c3f542b4e651055650a50902c2a287b0bc7150cb..b24d0213112a842f89200468ff05139221dacc7b 100644
--- a/chrome/browser/resources/shared/js/cr/ui/array_data_model.js
+++ b/chrome/browser/resources/shared/js/cr/ui/array_data_model.js
@@ -148,20 +148,24 @@ cr.define('cr.ui', function() {
       spliceEvent.added = Array.prototype.slice.call(arguments, 2);
 
       var rv = arr.splice.apply(arr, arguments);
+      var self = this;
 
       // if sortStatus.field is null, this restores original order.
-      var sortPermutation = this.doSort_(this.sortStatus.field,
-                                         this.sortStatus.direction);
-      if (sortPermutation) {
-        var splicePermutation = deletePermutation.map(function(element) {
-          return element != -1 ? sortPermutation[element] : -1;
-        });
-        this.dispatchPermutedEvent_(splicePermutation);
-      } else {
-        this.dispatchPermutedEvent_(deletePermutation);
-      }
+      this.prepareSort(this.sortStatus.field, function() {
+        var sortPermutation = self.doSort_(self.sortStatus.field,
+                                           self.sortStatus.direction);
+        if (sortPermutation) {
+          var splicePermutation = deletePermutation.map(function(element) {
+              return element != -1 ? sortPermutation[element] : -1;
+            });
+          self.dispatchPermutedEvent_(splicePermutation);
+        } else {
+          self.dispatchPermutedEvent_(deletePermutation);
+        }
+
+        self.dispatchEvent(spliceEvent);
+      });
 
-      this.dispatchEvent(spliceEvent);
       return rv;
     },
 
@@ -197,10 +201,13 @@ cr.define('cr.ui', function() {
       this.dispatchEvent(e);
 
       if (this.sortStatus.field) {
-        var sortPermutation = this.doSort_(this.sortStatus.field,
-                                           this.sortStatus.direction);
-        if (sortPermutation)
-          this.dispatchPermutedEvent_(sortPermutation);
+        var self = this;
+        this.prepareSort(self.sortStatus.field, function() {
+          var sortPermutation = self.doSort_(self.sortStatus.field,
+                                             self.sortStatus.direction);
+          if (sortPermutation)
+            self.dispatchPermutedEvent_(sortPermutation);
+        });
       }
     },