MD Settings: Add dedicated C++ handler for restart/relaunch/powerwash.

chrome/chrome_browser_ui.gypi

 # Copyright 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     # There are two sections of sources:
     # * "Platform"-based sources (OS, toolkit, etc.)
     # * Feature/directory-based sources (e.g., history, printing)
 
@@ skipping 2010 matching lines @@
       'browser/ui/webui/quota_internals/quota_internals_proxy.cc',
       'browser/ui/webui/quota_internals/quota_internals_proxy.h',
       'browser/ui/webui/quota_internals/quota_internals_types.cc',
       'browser/ui/webui/quota_internals/quota_internals_types.h',
       'browser/ui/webui/quota_internals/quota_internals_ui.cc',
       'browser/ui/webui/quota_internals/quota_internals_ui.h',
       'browser/ui/webui/settings/about_handler.cc',
       'browser/ui/webui/settings/about_handler.h',
       'browser/ui/webui/settings/appearance_handler.cc',
       'browser/ui/webui/settings/appearance_handler.h',
+      'browser/ui/webui/settings/browser_lifetime_handler.cc',
+      'browser/ui/webui/settings/browser_lifetime_handler.h',
       'browser/ui/webui/settings/chromeos/change_picture_handler.cc',
       'browser/ui/webui/settings/chromeos/change_picture_handler.h',
       'browser/ui/webui/settings/chromeos/device_keyboard_handler.cc',
       'browser/ui/webui/settings/chromeos/device_keyboard_handler.h',
       'browser/ui/webui/settings/chromeos/easy_unlock_settings_handler.cc',
       'browser/ui/webui/settings/chromeos/easy_unlock_settings_handler.h',
       'browser/ui/webui/settings/downloads_handler.cc',
       'browser/ui/webui/settings/downloads_handler.h',
       'browser/ui/webui/settings/font_handler.cc',
       'browser/ui/webui/settings/font_handler.h',
@@ skipping 1308 matching lines @@
           ],
           'sources': [
             '<@(chrome_browser_ui_non_mobile_sources)',
             '<@(chrome_browser_ui_omnibox_non_mobile_sources)',
           ],
         }],
       ],
     },
   ],
 }