Use device Robot Account to access Cloud Print.

chrome/browser/resources/print_preview/data/app_state.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';
 
   /**
    * Object used to get and persist the print preview application state.
    * @constructor
@@ skipping 77 matching lines @@
     this.isCssBackgroundEnabled_ = null;
   };
 
   /**
    * Current version of the app state. This value helps to understand how to
    * parse earlier versions of the app state.
    * @type {number}
    * @const
    * @private
    */
-  AppState.VERSION_ = 2;
+  AppState.VERSION_ = 3;
 
   /**
    * Enumeration of field names for serialized app state.
    * @enum {string}
    * @private
    */
   AppState.Field_ = {
     VERSION: 'version',
     SELECTED_DESTINATION_ID: 'selectedDestinationId',
     SELECTED_DESTINATION_ORIGIN: 'selectedDestinationOrigin',
@@ skipping 83 matching lines @@
       if (!serializedAppStateStr) {
         // Set some state defaults.
         this.isGcpPromoDismissed_ = false;
         return;
       }
 
       var state = JSON.parse(serializedAppStateStr);
       if (state[AppState.Field_.VERSION] == AppState.VERSION_) {
         this.selectedDestinationId_ =
             state[AppState.Field_.SELECTED_DESTINATION_ID] || null;
+            state[AppState.Field_.SELECTED_DESTINATION_ORIGIN] || null;
         if (state.hasOwnProperty(
                 AppState.Field_.IS_SELECTED_DESTINATION_LOCAL)) {
           this.selectedDestinationOrigin_ =
               state[AppState.Field_.IS_SELECTED_DESTINATION_LOCAL] ?
               print_preview.Destination.Origin.LOCAL :
               print_preview.Destination.Origin.COOKIES;
         } else {
           this.selectedDestinationOrigin_ =
               state[AppState.Field_.SELECTED_DESTINATION_ORIGIN] || null;
         }
@@ skipping 150 matching lines @@
       obj[AppState.Field_.IS_CSS_BACKGROUND_ENABLED] =
           this.isCssBackgroundEnabled_;
       chrome.send(AppState.NATIVE_FUNCTION_NAME_, [JSON.stringify(obj)]);
     }
   };
 
   return {
     AppState: AppState
   };
 });