### Issue Details
in frameless windows 
While setting browserview style to draggable by webkit-app-region : drag. the area won't be draggable after that
and it can not move main window 
### Electron Version:
11.0.1
### Operating System:
Windows 10 (1803)
Last Known Working Electron version:
not found
### Expected Behavior
Browser view moves the main window while I set the style of the body or one of the area to
-webkit-app-region: drag;

### Actual Behavior
nothing happen in browserview after styling -webkit-app-region: drag;

I know it is mention that in 11 version it is fixed. but it still dosn't work 

### To Reproduce
https://gist.github.com/pejmanpesyan/8540aad65e7c6980c45f23e5eaafafb9

shell/browser/native_window_views.cc
const content::DesktopMediaID id = content::DesktopMediaID::Parse(sourceId);
  if (id.type != content::DesktopMediaID::TYPE_WINDOW)
    return false;
#if defined(OS_WIN)
  const HWND otherWindow = reinterpret_cast<HWND>(id.id);
  if (!::IsWindow(otherWindow))
    return false;
  ::SetWindowPos(GetAcceleratedWidget(), GetWindow(otherWindow, GW_HWNDPREV), 0,
                 0, 0, 0,
                 SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
#elif defined(USE_X11)
  if (!features::IsUsingOzonePlatform()) {
    if (!IsWindowValid(static_cast<x11::Window>(id.id)))
      return false;
    electron::MoveWindowAbove(static_cast<x11::Window>(GetAcceleratedWidget()),
                              static_cast<x11::Window>(id.id));
  }
#endif
  return true;
}
void NativeWindowViews::MoveTop() {