Make "Join other network dialog" and "Join mobile network dialog" opens properly on multiple signin…

chrome/browser/ui/ash/system_tray_delegate_chromeos.cc

Index: chrome/browser/ui/ash/system_tray_delegate_chromeos.cc
diff --git a/chrome/browser/ui/ash/system_tray_delegate_chromeos.cc b/chrome/browser/ui/ash/system_tray_delegate_chromeos.cc
index 7f986609432d360c519d551ba5a5790c9d635c59..3c260d5516c62df2ee4d8e7e917d78351b7b5aea 100644
--- a/chrome/browser/ui/ash/system_tray_delegate_chromeos.cc
+++ b/chrome/browser/ui/ash/system_tray_delegate_chromeos.cc
@@ -137,9 +137,13 @@ void ExtractIMEInfo(const input_method::InputMethodDescriptor& ime,
 
 gfx::NativeWindow GetNativeWindowByStatus(ash::user::LoginStatus login_status,
                                           bool session_started) {
+  bool isUserAddingRunning = ash::Shell::GetInstance()
+                                 ->session_state_delegate()
+                                 ->IsInSecondaryLoginScreen();
+
   int container_id =
       (!session_started || login_status == ash::user::LOGGED_IN_NONE ||
-       login_status == ash::user::LOGGED_IN_LOCKED)
+       login_status == ash::user::LOGGED_IN_LOCKED || isUserAddingRunning)
           ? ash::kShellWindowId_LockSystemModalContainer
           : ash::kShellWindowId_SystemModalContainer;
   return ash::Shell::GetContainer(ash::Shell::GetPrimaryRootWindow(),