### 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
int width = 800, height = 600;
  options.Get(options::kWidth, &width);
  options.Get(options::kHeight, &height);
  gfx::Rect bounds(0, 0, width, height);
  widget_size_ = bounds.size();
  widget()->AddObserver(this);
  views::Widget::InitParams params;
  params.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
  params.bounds = bounds;
  params.delegate = this;
  params.type = views::Widget::InitParams::TYPE_WINDOW;
  params.remove_standard_frame = !has_frame();
  if (transparent())
    params.opacity = views::Widget::InitParams::WindowOpacity::kTranslucent;
  
  
  if (transparent() && !has_frame())
    params.shadow_type = views::Widget::InitParams::ShadowType::kNone;
  bool focusable;
  if (options.Get(options::kFocusable, &focusable) && !focusable)
    params.activatable = views::Widget::InitParams::ACTIVATABLE_NO;
#if defined(OS_WIN)
  if (parent)
    params.parent = parent->GetNativeWindow();
  params.native_widget = new ElectronDesktopNativeWidgetAura(this);
#elif defined(OS_LINUX)
  std::string name = Browser::Get()->GetName();
  
  params.wm_role_name = "browser-window";