Compile chrome://settings, part 9: yet another final battle

ui/webui/resources/js/cr/ui/bubble.js

Index: ui/webui/resources/js/cr/ui/bubble.js
diff --git a/ui/webui/resources/js/cr/ui/bubble.js b/ui/webui/resources/js/cr/ui/bubble.js
index 95318a4f1f2808a2ae330bc6a1087915b41cfe06..36ffb59d33ec4f923cc708803d090a73d10d91c4 100644
--- a/ui/webui/resources/js/cr/ui/bubble.js
+++ b/ui/webui/resources/js/cr/ui/bubble.js
@@ -477,6 +477,8 @@ cr.define('cr.ui', function() {
      * outside the bubble and its target element, scrolls the underlying
      * document or resizes the window.
      * @param {Event} event The event.
+     * @suppress {checkTypes}
+     * TODO(vitalyp): remove the suppression.
      */
     handleEvent: function(event) {
       BubbleBase.prototype.handleEvent.call(this, event);
@@ -486,14 +488,15 @@ cr.define('cr.ui', function() {
         // left-click on the bubble's target element (allowing the target to
         // handle the event and close the bubble itself).
         case 'mousedown':
-          if (event.button == 0 &&
-              this.anchorNode_.contains(assertInstanceof(event.target, Node))) {
+          var target = assertInstanceof(event.target, Node);
+          if (event.button == 0 && this.anchorNode_.contains(target)) {
             break;
           }
         // Close the bubble when the underlying document is scrolled.
         case 'mousewheel':
         case 'scroll':
-          if (this.contains(assertInstanceof(event.target, Node)))
+          var target = assertInstanceof(event.target, Node);
+          if (this.contains(target))
             break;
         // Close the bubble when the window is resized.
         case 'resize':