Do not record startup metrics when non-browser UI was displayed

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 229 matching lines @@
       'browser/ui/search_engines/keyword_editor_controller.cc',
       'browser/ui/search_engines/keyword_editor_controller.h',
       'browser/ui/search_engines/search_engine_tab_helper.cc',
       'browser/ui/search_engines/search_engine_tab_helper.h',
       'browser/ui/search_engines/template_url_table_model.cc',
       'browser/ui/search_engines/template_url_table_model.h',
       'browser/ui/settings_window_manager.cc',
       'browser/ui/settings_window_manager.h',
       'browser/ui/settings_window_manager_observer.h',
       'browser/ui/simple_message_box.h',
+      'browser/ui/simple_message_box_internal.cc',
+      'browser/ui/simple_message_box_internal.h',
       'browser/ui/status_bubble.h',
       'browser/ui/sync/inline_login_dialog.cc',
       'browser/ui/sync/inline_login_dialog.h',
       'browser/ui/sync/profile_signin_confirmation_helper.cc',
       'browser/ui/sync/profile_signin_confirmation_helper.h',
       'browser/ui/sync/tab_contents_synced_tab_delegate.cc',
       'browser/ui/sync/tab_contents_synced_tab_delegate.h',
       'browser/ui/tab_contents/chrome_web_contents_view_delegate.h',
       'browser/ui/tab_contents/core_tab_helper.cc',
       'browser/ui/tab_contents/core_tab_helper.h',
@@ skipping 2946 matching lines @@
           ],
           'sources': [
             '<@(chrome_browser_ui_non_mobile_sources)',
             '<@(chrome_browser_ui_omnibox_non_mobile_sources)',
           ],
         }],
       ],
     },
   ],
 }