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

chrome/browser/profiles/avatar_menu.cc

Index: chrome/browser/profiles/avatar_menu.cc
diff --git a/chrome/browser/profiles/avatar_menu.cc b/chrome/browser/profiles/avatar_menu.cc
index 24f1ec4888e8498826fda62f756cef2826cc69e0..da41957edccb2bd1bd9f0c4525afd2e25e2fc852 100644
--- a/chrome/browser/profiles/avatar_menu.cc
+++ b/chrome/browser/profiles/avatar_menu.cc
@@ -23,6 +23,7 @@
 #include "chrome/browser/ui/browser_dialogs.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/browser/ui/startup/startup_browser_creator.h"
+#include "chrome/browser/ui/user_manager.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/signin/core/common/profile_management_switches.h"
@@ -122,7 +123,9 @@ void AvatarMenu::SwitchToProfile(size_t index,
   if (switches::IsNewAvatarMenu()) {
     // Don't open a browser window for signed-out profiles.
     if (item.signin_required) {
-      chrome::ShowUserManager(item.profile_path);
+      UserManager::Show(item.profile_path,
+                        profiles::USER_MANAGER_NO_TUTORIAL,
+                        profiles::USER_MANAGER_SELECT_PROFILE_NO_ACTION);
       return;
     }
   }
@@ -135,7 +138,7 @@ void AvatarMenu::SwitchToProfile(size_t index,
     desktop_type = browser_->host_desktop_type();
 
   profiles::SwitchToProfile(path, desktop_type, always_create,
-                            profiles::ProfileSwitchingDoneCallback(),
+                            ProfileManager::CreateCallback(),
                             metric);
 }