### 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
display::Screen::GetScreen()->GetDisplayNearestPoint(GetPosition());
      SetBounds(display.bounds(), false);
    } else {
      SetBounds(restore_bounds_, false);
    }
    return;
  }
  
  
  widget()->SetFullscreen(fullscreen);
  
  
  
  
  if (leaving_fullscreen && !IsVisible())
    FlipWindowStyle(GetAcceleratedWidget(), true, WS_VISIBLE);
#else
  if (IsVisible())
    widget()->SetFullscreen(fullscreen);
  else if (fullscreen)
    widget()->native_widget_private()->Show(ui::SHOW_STATE_FULLSCREEN,
                                            gfx::Rect());
  
  if (fullscreen)
    SetMenuBarVisibility(false);
  else
    SetMenuBarVisibility(!IsMenuBarAutoHide());
#endif
}
bool NativeWindowViews::IsFullscreen() const {