### Preflight Checklist

- [X] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
- [X] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
- [X] I have searched the [issue tracker](https://www.github.com/electron/electron/issues) for a feature request that matches the one I want to file, without success.

### Electron Version

12.0.0

### What operating system are you using?

macOS

### Operating System Version

10.14.0

### What arch are you using?

x64

### Last Known Working Electron version

---

### Expected Behavior

No crash when calling method

### Actual Behavior

App crashes when calling `getBackgroundColr()`

### Testcase Gist URL

https://gist.github.com/d50e366f070104cac377fd7a48722cbe

### Additional Information

_No response_


shell/browser/native_window_views.cc
const gfx::Rect& bounds) {
  if (changed_widget != widget())
    return;
  
  
  const auto new_bounds = GetBounds();
  if (widget_size_ != new_bounds.size()) {
    int width_delta = new_bounds.width() - widget_size_.width();
    int height_delta = new_bounds.height() - widget_size_.height();
    for (NativeBrowserView* item : browser_views()) {
      auto* native_view = static_cast<NativeBrowserViewViews*>(item);
      native_view->SetAutoResizeProportions(widget_size_);
      native_view->AutoResize(new_bounds, width_delta, height_delta);
    }
    NotifyWindowResize();
    widget_size_ = new_bounds.size();
  }
}
void NativeWindowViews::OnWidgetDestroying(views::Widget* widget) {
#if defined(OS_LINUX)
  aura::Window* window = GetNativeWindow();
  if (window)
    window->RemovePreTargetHandler(this);
#endif
}
void NativeWindowViews::OnWidgetDestroyed(views::Widget* changed_widget) {