Fix all remaining print preview closure compiler errors

chrome/browser/resources/print_preview/search/destination_list.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * Component that displays a list of destinations with a heading, action link,
    * and "Show All..." button. An event is dispatched when the action link is
@@ skipping 66 matching lines @@
      * @private
      */
     this.shortListSize_ = DestinationList.DEFAULT_SHORT_LIST_SIZE_;
 
     /**
      * List items representing destinations.
      * @type {!Array<!print_preview.DestinationListItem>}
      * @private
      */
     this.listItems_ = [];
-  };
+  }
 
   /**
    * Enumeration of event types dispatched by the destination list.
    * @enum {string}
    */
   DestinationList.EventType = {
     // Dispatched when the action linked is activated.
     ACTION_LINK_ACTIVATED: 'print_preview.DestinationList.ACTION_LINK_ACTIVATED'
   };
 
@@ skipping 157 matching lines @@
 
     /**
      * Renders all destinations in the list that match the current query.
      * @private
      */
     renderDestinations_: function() {
       if (!this.query_) {
         this.renderDestinationsList_(this.destinations_);
       } else {
         var filteredDests = this.destinations_.filter(function(destination) {
-          return destination.matches(this.query_);
+          return destination.matches(assert(this.query_));
         }, this);
         this.renderDestinationsList_(filteredDests);
       }
     },
 
     /**
      * Renders all destinations in the given list.
      * @param {!Array<print_preview.Destination>} destinations List of
      *     destinations to render.
      * @private
@@ skipping 25 matching lines @@
       this.listItems_.forEach(function(item) {
         var isVisible = visibleListItems.hasOwnProperty(item.destination.id);
         setIsVisible(item.getElement(), isVisible);
         if (isVisible)
           visibleListItems[item.destination.id] = item;
       });
       // Update the existing items, add the new ones (preserve the focused one).
       var listEl = this.getChildElement('.destination-list > ul');
       var focusedEl = listEl.querySelector(':focus');
       for (var i = 0; i < numItems; i++) {
-        var listItem = visibleListItems[destinations[i].id];
+        var destination = assert(destinations[i]);
+        var listItem = visibleListItems[destination.id];
         if (listItem) {
           // Destination ID is the same, but it can be registered to a different
           // user account, hence passing it to the item update.
-          this.updateListItem_(listEl, listItem, focusedEl, destinations[i]);
+          this.updateListItem_(listEl, listItem, focusedEl, destination);
         } else {
-          this.renderListItem_(listEl, destinations[i]);
+          this.renderListItem_(listEl, destination);
         }
       }
     },
 
     /**
      * @param {Element} listEl List element.
      * @param {!print_preview.DestinationListItem} listItem List item to update.
      * @param {Element} focusedEl Currently focused element within the listEl.
      * @param {!print_preview.Destination} destination Destination to render.
      * @private
@@ skipping 18 matching lines @@
 
     /**
      * @param {Element} listEl List element.
      * @param {!print_preview.Destination} destination Destination to render.
      * @private
      */
     renderListItem_: function(listEl, destination) {
       var listItem = new print_preview.DestinationListItem(
           this.eventTarget_, destination, this.query_);
       this.addChild(listItem);
-      listItem.render(listEl);
+      listItem.render(assert(listEl));
       this.listItems_.push(listItem);
     },
 
     /**
      * Called when the action link is clicked. Dispatches an
      * ACTION_LINK_ACTIVATED event.
      * @private
      */
     onActionLinkClick_: function() {
       cr.dispatchSimpleEvent(this,
                              DestinationList.EventType.ACTION_LINK_ACTIVATED);
     }
   };
 
   // Export
   return {
     DestinationList: DestinationList
   };
 });