Access to Chrome via the System Tray should go through the User Manager.

chrome/browser/ui/startup/startup_browser_creator.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/ui/startup/startup_browser_creator.h"
 
 #include <algorithm>   // For max().
 #include <set>
 
 #include "apps/app_load_service.h"
@@ skipping 30 matching lines @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profiles_state.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/ui/app_list/app_list_service.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/startup/startup_browser_creator_impl.h"
+#include "chrome/browser/ui/user_manager.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_result_codes.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/chrome_version_info.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/installer/util/browser_distribution.h"
 #include "components/google/core/browser/google_util.h"
 #include "components/search_engines/util.h"
@@ skipping 566 matching lines @@
   if (last_opened_profiles.empty()) {
     // If the last used profile is locked or was a guest, show the user manager.
     if (switches::IsNewAvatarMenu()) {
       ProfileInfoCache& profile_info =
           g_browser_process->profile_manager()->GetProfileInfoCache();
       size_t profile_index = profile_info.GetIndexOfProfileWithPath(
           last_used_profile->GetPath());
       bool signin_required = profile_index != std::string::npos &&
           profile_info.ProfileIsSigninRequiredAtIndex(profile_index);
       if (signin_required || last_used_profile->IsGuestSession()) {
-        chrome::ShowUserManager(base::FilePath());
+        UserManager::Show(base::FilePath(),
+                          profiles::USER_MANAGER_NO_TUTORIAL,
+                          profiles::USER_MANAGER_SELECT_PROFILE_NO_ACTION);
         return true;
       }
     }
     if (!browser_creator->LaunchBrowser(command_line, last_used_profile,
                                         cur_dir, is_process_startup,
                                         is_first_run, return_code)) {
       return false;
     }
   } else {
     // Launch the last used profile with the full command line, and the other
@@ skipping 94 matching lines @@
   // If we are showing the app list then chrome isn't shown so load the app
   // list's profile rather than chrome's.
   if (command_line.HasSwitch(switches::kShowAppList)) {
     return AppListService::Get(chrome::HOST_DESKTOP_TYPE_NATIVE)->
         GetProfilePath(user_data_dir);
   }
 
   return g_browser_process->profile_manager()->GetLastUsedProfileDir(
       user_data_dir);
 }