Perform printer setup on Chrome OS before selecting printer.

chrome/test/data/webui/print_preview.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.
 
 GEN('#include "base/feature_list.h"');
 GEN('#include "chrome/common/chrome_features.h"');
 
 /**
  * Test fixture for print preview WebUI testing.
  * @constructor
@@ skipping 369 matching lines @@
         '"account":"", "capabilities":0, "name":"", "extensionId":"",' +
             '"extensionName":""}]}';
   this.setInitialSettings();
 
   testDone();
 });
 
 //Test with multiple destinations
 TEST_F('PrintPreviewWebUITest', 'TestPrintPreviewRestoreMultipleDestinations',
     function() {
+  var origin = cr.isChromeOS ? "chrome_os" : "local";
+
   this.initialSettings_.serializedAppStateStr_ =

[dpapad, 2017/01/12 01:18:10]

Nit (optional): Instead of painfully constructing a JSON string manually, how
about the following?

var settings = {
  version: 2,
  recentDestinations: [1, 2, 3].map(function(i) {
    return {
      id: 'ID' + i, origin: origin, account: '', capabilities: 0,
      name: '', extensionId: '', extensionName: ''
    };
  }),
};

this.initialSettings_.serializedAppStateStr_ = JSON.stringify(settings);

[skau, 2017/01/12 02:17:17]

Done.

-      '{"version":2,"recentDestinations":[{"id":"ID1", "origin":"local",' +
+      '{"version":2,"recentDestinations":[{' +
+        '"id":"ID1", "origin":"' + origin + '",' +
         '"account":"", "capabilities":0, "name":"", "extensionId":"",' +
             '"extensionName":""},' +
-      '{"id":"ID2", "origin":"local",' +
+      '{"id":"ID2", "origin":"' + origin + '",' +
         '"account":"", "capabilities":0, "name":"", "extensionId":"",' +
             '"extensionName":""},' +
-      '{"id":"ID3", "origin":"local",' +
+      '{"id":"ID3", "origin":"' + origin + '",' +
         '"account":"", "capabilities":0, "name":"", "extensionId":"",' +
             '"extensionName":""}]}';
   this.setInitialSettings();
 
   // Set capabilities for the three recently used destinations + 1 more
   this.setCapabilities(getCddTemplate('ID1'));
   this.setCapabilities(getCddTemplate('ID2'));
   this.setCapabilities(getCddTemplate('ID3'));
   this.setCapabilities(getCddTemplate('ID4'));
 
@@ skipping 820 matching lines @@
   // appears.
   var advancedSettingsCloseButton = $('advanced-settings').
       querySelector('.close-button');
   checkElementDisplayed(advancedSettingsCloseButton, true);
   checkElementDisplayed($('advanced-settings').
       querySelector('.search-box-area'), true);
 
   this.waitForAnimationToEnd('more-settings');
 });