[Smart Lock] Add a private API to show an error bubble anchored to the Smart Lock app window.

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 791 matching lines @@
       'browser/ui/passwords/password_ui_view.h',
       'browser/ui/passwords/save_password_refusal_combobox_model.cc',
       'browser/ui/passwords/save_password_refusal_combobox_model.h',
       'browser/ui/prefs/prefs_tab_helper.cc',
       'browser/ui/prefs/prefs_tab_helper.h',
       'browser/ui/process_singleton_dialog_linux.h',
       'browser/ui/profile_chooser_constants.h',
       'browser/ui/profile_error_dialog.cc',
       'browser/ui/profile_error_dialog.h',
       'browser/ui/protocol_dialog_delegate.h',
+      'browser/ui/proximity_auth/proximity_auth_error_bubble.cc',
+      'browser/ui/proximity_auth/proximity_auth_error_bubble.h',
       'browser/ui/screen_capture_notification_ui.h',
       'browser/ui/search/instant_controller.cc',
       'browser/ui/search/instant_controller.h',
       'browser/ui/search/instant_page.cc',
       'browser/ui/search/instant_page.h',
       'browser/ui/search/instant_search_prerenderer.cc',
       'browser/ui/search/instant_search_prerenderer.h',
       'browser/ui/search/instant_tab.cc',
       'browser/ui/search/instant_tab.h',
       'browser/ui/search/search_ipc_router.cc',
@@ skipping 1402 matching lines @@
       'browser/ui/views/profiles/new_avatar_button.cc',
       'browser/ui/views/profiles/new_avatar_button.h',
       'browser/ui/views/profiles/profile_chooser_view.cc',
       'browser/ui/views/profiles/profile_chooser_view.h',
       'browser/ui/views/profiles/profile_reset_bubble_view.cc',
       'browser/ui/views/profiles/profile_reset_bubble_view.h',
       'browser/ui/views/profiles/supervised_user_avatar_label.cc',
       'browser/ui/views/profiles/supervised_user_avatar_label.h',
       'browser/ui/views/profiles/user_manager_view.cc',
       'browser/ui/views/profiles/user_manager_view.h',
+      'browser/ui/views/proximity_auth/proximity_auth_error_bubble_view.cc',
+      'browser/ui/views/proximity_auth/proximity_auth_error_bubble_view.h',
       'browser/ui/views/renderer_context_menu/render_view_context_menu_views.cc',
       'browser/ui/views/renderer_context_menu/render_view_context_menu_views.h',
       'browser/ui/views/sad_tab_view.cc',
       'browser/ui/views/sad_tab_view.h',
       'browser/ui/views/session_crashed_bubble_view.cc',
       'browser/ui/views/session_crashed_bubble_view.h',
       'browser/ui/views/settings_api_bubble_helper_views.cc',
       'browser/ui/views/settings_api_bubble_helper_views.h',
       'browser/ui/views/signed_certificate_timestamp_info_view.cc',
       'browser/ui/views/signed_certificate_timestamp_info_view.h',
@@ skipping 871 matching lines @@
           ],
           'sources': [
             '<@(chrome_browser_ui_non_mobile_sources)',
             '<@(chrome_browser_ui_omnibox_non_mobile_sources)',
           ],
         }],
       ],
     },
   ],
 }