Notify print preview UI if getting capabilityes failed.

chrome/browser/ui/webui/print_preview/print_preview_handler.cc

 // 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.
 
 #include "chrome/browser/ui/webui/print_preview/print_preview_handler.h"
 
 #include <ctype.h>
 
 #include <string>
 #include <vector>
@@ skipping 757 matching lines @@
   if (GetStickySettings()->color_model() != printing::UNKNOWN_COLOR_MODEL) {
     settings->SetBoolean(
         printing::kSettingSetColorAsDefault,
         printing::isColorModelSelected(
             GetStickySettings()->color_model()));
   }
   web_ui()->CallJavascriptFunction("updateWithPrinterCapabilities",
                                    *settings);
 }
 
+void PrintPreviewHandler::SendFailedToGetPrinterCapabilities(
+    const std::string& printer_name) {
+  VLOG(1) << "Get printer capabilities failed";
+  web_ui()->CallJavascriptFunction("failedToGetPrinterCapabilities",
+                                   base::StringValue(printer_name));
+}
+
 void PrintPreviewHandler::SetupPrinterList(const ListValue& printers) {
   web_ui()->CallJavascriptFunction("setPrinters", printers);
 }
 
 void PrintPreviewHandler::SendCloudPrintEnabled() {
   Profile* profile = Profile::FromBrowserContext(
       preview_web_contents()->GetBrowserContext());
   PrefService* prefs = profile->GetPrefs();
   if (prefs->GetBoolean(prefs::kCloudPrintSubmitEnabled)) {
     GURL gcp_url(CloudPrintURL(profile).GetCloudPrintServiceURL());
@@ skipping 173 matching lines @@
     return;
 
   // We no longer require the initiator tab details. Remove those details
   // associated with the preview tab to allow the initiator tab to create
   // another preview tab.
   printing::PrintPreviewTabController* tab_controller =
       printing::PrintPreviewTabController::GetInstance();
   if (tab_controller)
     tab_controller->EraseInitiatorTabInfo(preview_tab_contents());
 }