Perform printer setup on Chrome OS before selecting printer.

chrome/browser/resources/print_preview/native_layer.js

Index: chrome/browser/resources/print_preview/native_layer.js
diff --git a/chrome/browser/resources/print_preview/native_layer.js b/chrome/browser/resources/print_preview/native_layer.js
index e0c54bc360b0fe104d2f383b49db9cabe8577fe0..974aacacd837443d6eead728571bd268367ecc51 100644
--- a/chrome/browser/resources/print_preview/native_layer.js
+++ b/chrome/browser/resources/print_preview/native_layer.js
@@ -232,6 +232,15 @@ cr.define('print_preview', function() {
     },
 
     /**
+     * Requests that Chrome peform printer setup for the given printer.
+     * @param {string} printerId
+     * @return {!Promise<Object>}
+     */
+    setupPrinter: function(printerId) {
+      return cr.sendWithPromise('setupPrinter', [printerId]);

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

Why do you need to wrap |printerId| in an array? Should not be necessary.

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

I've unwrapped it.  Send needed it to be wrapped.

+    },
+
+    /**
      * @param {!print_preview.Destination} destination Destination to print to.
      * @param {!print_preview.ticket_items.Color} color Color ticket item.
      * @return {number} Native layer color model.