[CUPS] Implement the local CUPS printer setup waiting UI.

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

Index: chrome/browser/ui/webui/print_preview/print_preview_ui.cc
diff --git a/chrome/browser/ui/webui/print_preview/print_preview_ui.cc b/chrome/browser/ui/webui/print_preview/print_preview_ui.cc
index 3df34d9d4e2f983f89d9e948a7632479dd3c30e0..e2c0a6eca40c8e3b08d86db11338509d75d4c536 100644
--- a/chrome/browser/ui/webui/print_preview/print_preview_ui.cc
+++ b/chrome/browser/ui/webui/print_preview/print_preview_ui.cc
@@ -381,6 +381,10 @@ content::WebUIDataSource* CreatePrintPreviewUISource() {
       "groupPrinterSharingInviteText", IDS_PRINT_PREVIEW_GROUP_INVITE_TEXT);
   source->AddLocalizedString(
       "printerSharingInviteText", IDS_PRINT_PREVIEW_INVITE_TEXT);
+  source->AddLocalizedString("configuringInProgressText",
+                             IDS_PRINT_CONFIGURING_IN_PROGRESS_TEXT);
+  source->AddLocalizedString("configuringFailedText",
+                             IDS_PRINT_CONFIGURING_FAILED_TEXT);
 
   source->SetJsonPath("strings.js");
   source->AddResourcePath("print_preview.js", IDR_PRINT_PREVIEW_JS);