### 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
if (options.Get(options::kSkipTaskbar, &skip_taskbar) && skip_taskbar) {
      state_atom_list.push_back(gfx::GetAtom("_NET_WM_STATE_SKIP_TASKBAR"));
    }
    
    if (fullscreen) {
      state_atom_list.push_back(gfx::GetAtom("_NET_WM_STATE_FULLSCREEN"));
    }
    if (parent) {
      
      window_type = "dialog";
      
      if (is_modal())
        state_atom_list.push_back(gfx::GetAtom("_NET_WM_STATE_MODAL"));
    }
    if (!state_atom_list.empty())
      ui::SetAtomArrayProperty(static_cast<x11::Window>(GetAcceleratedWidget()),
                               "_NET_WM_STATE", "ATOM", state_atom_list);
    
    if (!window_type.empty())
      SetWindowType(static_cast<x11::Window>(GetAcceleratedWidget()),
                    window_type);
  }
#endif
#if defined(OS_WIN)
  if (!has_frame()) {
    
    
    DWORD frame_style = WS_CAPTION | WS_OVERLAPPED;
    if (resizable_)
      frame_style |= WS_THICKFRAME;