[Win] Add option to reauthenticate the OS user before revealing passwords.

chrome/browser/ui/webui/options/password_manager_handler.cc

Index: chrome/browser/ui/webui/options/password_manager_handler.cc
diff --git a/chrome/browser/ui/webui/options/password_manager_handler.cc b/chrome/browser/ui/webui/options/password_manager_handler.cc
index 9b4382585906991e7cc8339640a426eeb62a738b..3805f1d022b5349689b44df552f9e1a79573f0b3 100644
--- a/chrome/browser/ui/webui/options/password_manager_handler.cc
+++ b/chrome/browser/ui/webui/options/password_manager_handler.cc
@@ -17,6 +17,8 @@
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/user_metrics.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_view.h"
 #include "content/public/browser/web_ui.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
@@ -34,6 +36,12 @@ Profile* PasswordManagerHandler::GetProfile() {
   return Profile::FromWebUI(web_ui());
 }
 
+#if !defined(OS_ANDROID)
+gfx::NativeWindow PasswordManagerHandler::GetNativeWindow() {
+  return web_ui()->GetWebContents()->GetView()->GetTopLevelNativeWindow();
+}
+#endif
+
 void PasswordManagerHandler::GetLocalizedValues(
     DictionaryValue* localized_strings) {
   DCHECK(localized_strings);