Perform printer setup on Chrome OS before selecting printer.

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 52ba8300dd4e15b97a553031775d15315ee4afa6..40a051500a9cf37ee0c6d51cbdf124490b231305 100644
--- a/chrome/browser/ui/webui/print_preview/print_preview_handler.cc
+++ b/chrome/browser/ui/webui/print_preview/print_preview_handler.cc
@@ -570,6 +570,9 @@ void PrintPreviewHandler::RegisterMessages() {
       "getPrinterCapabilities",
       base::Bind(&PrintPreviewHandler::HandleGetPrinterCapabilities,
                  base::Unretained(this)));
+  web_ui()->RegisterMessageCallback(
+      "setupPrinter", base::Bind(&PrintPreviewHandler::HandlePrinterSetup,
+                                 base::Unretained(this)));
 #if BUILDFLAG(ENABLE_BASIC_PRINT_DIALOG)
   web_ui()->RegisterMessageCallback("showSystemDialog",
       base::Bind(&PrintPreviewHandler::HandleShowSystemDialog,
@@ -1079,6 +1082,17 @@ void PrintPreviewHandler::HandleGetPrinterCapabilities(
                                                                 cb);
 }
 
+void PrintPreviewHandler::HandlePrinterSetup(const base::ListValue* args) {
+  std::string printer_name;
+  bool ret = args->GetString(0, &printer_name);
+  if (!ret || printer_name.empty())
+    return;
+
+  printer_backend_proxy()->ConfigurePrinterAndFetchCapabilities(
+      printer_name, base::Bind(&PrintPreviewHandler::SendPrinterSetup,
+                               weak_factory_.GetWeakPtr(), printer_name));
+}
+
 void PrintPreviewHandler::OnSigninComplete() {
   if (print_preview_ui())
     print_preview_ui()->OnReloadPrintersList();
@@ -1279,6 +1293,24 @@ void PrintPreviewHandler::SendPrinterCapabilities(
                                          *settings_info);
 }
 
+void PrintPreviewHandler::SendPrinterSetup(
+    const std::string& printer_name,
+    std::unique_ptr<base::DictionaryValue> destination_info) {
+  bool success = true;
+  base::DictionaryValue empty_dictionary;
+  base::DictionaryValue* caps;
+  if (!destination_info ||
+      !destination_info->GetDictionary(printing::kPrinterCapabilities, &caps)) {
+    LOG(WARNING) << "Printer setup failed";
+    caps = &empty_dictionary;
+    success = false;
+  }
+
+  web_ui()->CallJavascriptFunctionUnsafe(
+      "onPrinterSetup", base::StringValue(printer_name),
+      base::FundamentalValue(success), *caps);
+}
+
 void PrintPreviewHandler::SetupPrinterList(
     const printing::PrinterList& printer_list) {
   base::ListValue printers;