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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
auto* osr_wcv = GetOffScreenWsView();
  return osr_wcv && osr_wcv->IsPainting();
}
void Ws::SetFrameRate(int frame_rate) {
  auto* osr_wcv = GetOffScreenWsView();
  if (osr_wcv)
    osr_wcv->SetFrameRate(frame_rate);
}
int Ws::GetFrameRate() const {
  auto* osr_wcv = GetOffScreenWsView();
  return osr_wcv ? osr_wcv->GetFrameRate() : 0;
}
#endif
void Ws::Invalidate() {
  if (IsOffScreen()) {
#if BUILDFLAG(ENABLE_OSR)
    auto* osr_rwhv = GetOffScreenRenderWidgetHostView();
    if (osr_rwhv)
      osr_rwhv->Invalidate();
#endif
  } else {
    auto* const window = owner_window();
    if (window)
      window->Invalidate();
  }
}
gfx::Size Ws::GetSizeForNewRenderView(content::Ws* wc) {