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

chrome/browser/password_manager/password_manager_util_stub.cc

Index: chrome/browser/password_manager/password_manager_util_stub.cc
diff --git a/ui/base/touch/touch_device_android.cc b/chrome/browser/password_manager/password_manager_util_stub.cc
similarity index 64%
copy from ui/base/touch/touch_device_android.cc
copy to chrome/browser/password_manager/password_manager_util_stub.cc
index 39e34c24765363d439e175cad62cdc98ef257ed8..6eb4984f75d367d5660091553b6f46a1fee9a493 100644
--- a/ui/base/touch/touch_device_android.cc
+++ b/chrome/browser/password_manager/password_manager_util_stub.cc
@@ -2,12 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ui/base/touch/touch_device.h"
+namespace password_manager_util {
 
-namespace ui {
-
-bool IsTouchDevicePresent() {
+bool AuthenticateUser() {
   return true;
 }
 
-}  // namespace ui
+}  // namespace password_manager_util