[CUPS] Implement the local CUPS printer setup waiting UI.

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

Index: chrome/browser/resources/print_preview/search/destination_list.js
diff --git a/chrome/browser/resources/print_preview/search/destination_list.js b/chrome/browser/resources/print_preview/search/destination_list.js
index 351d31184980cbe76ca4808d869d0e1ec89238c0..903831d9fca0782d1f69e3828eabc45ed51c0053 100644
--- a/chrome/browser/resources/print_preview/search/destination_list.js
+++ b/chrome/browser/resources/print_preview/search/destination_list.js
@@ -225,6 +225,17 @@ cr.define('print_preview', function() {
     },
 
     /**
+     * @param {string} destinationId The ID of the destination.
+     * @return {?print_preview.DestinationListItem} The found destination list
+     *     item or null if not found.
+     */
+    getDestinationItem: function(destinationId) {
+      return this.listItems_.find(function(listItem) {
+        return listItem.destination.id == destinationId;
+      });

[dpapad, 2017/03/30 20:56:23]

find() returns undefined, if nothing is found, see documentation at [1]. The
comment above is not accurate. 

return this.listItems_.find(function(listItem) {
  return listItem.destination.id == destinationId;
}) || null;

[1]
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Obje...

[xdai1, 2017/03/30 23:18:43]

Thanks. Done.

+    },
+
+    /**
      * @param {string} text Text to set the action link to.
      * @protected
      */