Perform printer setup on Chrome OS before selecting printer.

chrome/test/data/webui/print_preview.js

Index: chrome/test/data/webui/print_preview.js
diff --git a/chrome/test/data/webui/print_preview.js b/chrome/test/data/webui/print_preview.js
index 5848d82ad20217a23a73956fc439c2146cf8736b..fe4afab3565f846a5ae3f9b809e80635b089480b 100644
--- a/chrome/test/data/webui/print_preview.js
+++ b/chrome/test/data/webui/print_preview.js
@@ -387,14 +387,17 @@ TEST_F('PrintPreviewWebUITest', 'TestPrintPreviewRestoreLocalDestination',
 //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();