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### Preflight Checklist
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* [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 for a feature request that matches the one I want to file, without success.

### Problem Description
<!-- Is your feature request related to a problem? Please add a clear and concise description of what the problem is. -->

They is no way to choose the paper format (A4, A3, Letter, ...) when printing with `webContents.print()`.

### Proposed Solution
<!-- Describe the solution you'd like in a clear and concise manner -->

Add something like the `pageSize` option which is available in [`webContents.printToPDF()`](https://electronjs.org/docs/api/web-contents#contentsprinttopdfoptions-callback).

shell/browser/api/electron_api_web_contents.cc
base::BindRepeating(&Ws::OnPaint, base::Unretained(this)));
      params.view = view;
      params.delegate_view = view;
      ontents = content::Ws::Create(params);
      view->SetWs(ontents.get());
    } else {
#endif
      ontents = content::Ws::Create(params);
#if BUILDFLAG(ENABLE_OSR)
    }
  } else if (IsOffScreen()) {
    bool transparent = false;
    options.Get("transparent", &transparent);
    content::Ws::CreateParams params(session->browser_context());
    auto* view = new OffScreenWsView(
        transparent,
        base::BindRepeating(&Ws::OnPaint, base::Unretained(this)));
    params.view = view;
    params.delegate_view = view;
    ontents = content::Ws::Create(params);
    view->SetWs(ontents.get());
#endif
  } else {
    content::Ws::CreateParams params(session->browser_context());
    params.initially_hidden = !initially_shown;
    ontents = content::Ws::Create(params);
  }
  InitWithSessionAndOptions(isolate, std::move(ontents), session, options);
}
void Ws::InitZoomController(content::Ws* ontents,