Notify print preview UI if getting capabilityes failed.

chrome/browser/resources/print_preview/native_layer.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';
 
   /**
    * An interface to the native Chromium printing system layer.
    * @constructor
    * @extends {cr.EventTarget}
    */
   function NativeLayer() {
     cr.EventTarget.call(this);
 
     // Bind global handlers
     global['setInitialSettings'] = this.onSetInitialSettings_.bind(this);
     global['setUseCloudPrint'] = this.onSetUseCloudPrint_.bind(this);
     global['setPrinters'] = this.onSetPrinters_.bind(this);
     global['updateWithPrinterCapabilities'] =
         this.onUpdateWithPrinterCapabilities_.bind(this);
+    global['failedToGetPrinterCapabilities'] =
+        this.onFailedToGetPrinterCapabilities_.bind(this);
     global['reloadPrintersList'] = this.onReloadPrintersList_.bind(this);
     global['printToCloud'] = this.onPrintToCloud_.bind(this);
     global['fileSelectionCancelled'] =
         this.onFileSelectionCancelled_.bind(this);
     global['fileSelectionCompleted'] =
         this.onFileSelectionCompleted_.bind(this);
     global['printPreviewFailed'] = this.onPrintPreviewFailed_.bind(this);
     global['invalidPrinterSettings'] =
         this.onInvalidPrinterSettings_.bind(this);
     global['onDidGetDefaultPageLayout'] =
@@ skipping 369 matching lines @@
      * destination.
      * @param {Object} settingsInfo printer setting information.
      * @private
      */
     onUpdateWithPrinterCapabilities_: function(settingsInfo) {
       var capsSetEvent = new cr.Event(NativeLayer.EventType.CAPABILITIES_SET);
       capsSetEvent.settingsInfo = settingsInfo;
       this.dispatchEvent(capsSetEvent);
     },
 
+    /**
+     * Called when native layer gets settings information for a requested local
+     * destination.
+     * @param {Object} printer_name printer affected by error.

[Robert Toscano, 2012/08/22 01:05:31]

should be "@param {string} printerName ..."

+     * @private
+     */
+    onFailedToGetPrinterCapabilities_: function(printer_name) {

[Robert Toscano, 2012/08/22 01:05:31]

Plz use camel case for var names: printerName

+      // TODO(rltoscano): Switch to the next printer.
+      console.log('onFailedToGetPrinterCapabilities: ' + printer_name);
+    },
+
     /** Reloads the printer list. */
     onReloadPrintersList_: function() {
       cr.dispatchSimpleEvent(this, NativeLayer.EventType.DESTINATIONS_RELOAD);
     },
 
     /**
      * Called from the C++ layer.
      * Take the PDF data handed to us and submit it to the cloud, closing the
      * print preview tab once the upload is successful.
      * @param {string} data Data to send as the print job.
@@ skipping 320 matching lines @@
       return this.initialDestinationId_;
     }
   };
 
   // Export
   return {
     NativeInitialSettings: NativeInitialSettings,
     NativeLayer: NativeLayer
   };
 });