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

chrome/browser/profiles/profile_list_desktop_browsertest.cc

 // Copyright (c) 2013 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 "base/command_line.h"
 #include "base/path_service.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/profiles/avatar_menu.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profile_window.h"
 #include "chrome/browser/profiles/profiles_state.h"
 #include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/user_manager.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/test_switches.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "content/public/test/test_utils.h"
 
 namespace {
 
 // An observer that returns back to test code after a new profile is
 // initialized.
@@ skipping 54 matching lines @@
       content::Source<Browser>(browser()));
 
   EXPECT_FALSE(cache.ProfileIsSigninRequiredAtIndex(index));
   profiles::LockProfile(current_profile);
   window_close_observer.Wait();  // rely on test time-out for failure indication
 
   EXPECT_TRUE(cache.ProfileIsSigninRequiredAtIndex(index));
   EXPECT_EQ(0U, browser_list->size());
 
   // Signing out brings up the User Manager which we should close before exit.
-  chrome::HideUserManager();
+  UserManager::Hide();
 }
 
 #if defined(OS_CHROMEOS)
 // This test doesn't make sense for Chrome OS since it has a different
 // multi-profiles menu in the system tray instead.
 #define MAYBE_SwitchToProfile DISABLED_SwitchToProfile
 #else
 #define MAYBE_SwitchToProfile SwitchToProfile
 #endif
 IN_PROC_BROWSER_TEST_F(ProfileListDesktopBrowserTest, MAYBE_SwitchToProfile) {
@@ skipping 43 matching lines @@
                         false, ProfileMetrics::SWITCH_PROFILE_ICON);
   EXPECT_EQ(2U, browser_list->size());
 
   // Switch to the first profile without opening a new window.
   menu->SwitchToProfile(cache.GetIndexOfProfileWithPath(path_profile1),
                         false, ProfileMetrics::SWITCH_PROFILE_ICON);
   EXPECT_EQ(2U, browser_list->size());
   EXPECT_EQ(path_profile1, browser_list->get(0)->profile()->GetPath());
   EXPECT_EQ(path_profile2, browser_list->get(1)->profile()->GetPath());
 }