Notify print preview UI if getting capabilityes failed.

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

Index: chrome/browser/ui/webui/print_preview/print_preview_handler.cc
diff --git a/chrome/browser/ui/webui/print_preview/print_preview_handler.cc b/chrome/browser/ui/webui/print_preview/print_preview_handler.cc
index 94d84ce31c477408902eb29bd038bf8d07695cae..508d29e3883622a0b9b1d9681ddca112f71207b4 100644
--- a/chrome/browser/ui/webui/print_preview/print_preview_handler.cc
+++ b/chrome/browser/ui/webui/print_preview/print_preview_handler.cc
@@ -775,6 +775,13 @@ void PrintPreviewHandler::SendPrinterCapabilities(
                                    *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);
 }