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### Issue Details

* **Electron Version:**
  10.1.1
* **Operating System:**
  Ubuntu 20.04 + Linux 5.4.0-47-generic
* **Last Known Working Electron version:**
 7.1.2

### Expected Behavior
`webContents.getPrinters()` returns one printer. Besides, the OS provides additional virtual devices.
`webContents.print()` should open the print dialog and show those devices for selection.

### Actual Behavior
`webContents.print()` fails silently; in the print callback, `failureReason` is 'No valid printers available'

### To Reproduce
Just run `webContents.print()`

Electron fiddle: https://gist.github.com/35c5067af8ec104f86bd0cdd4a95b1f5

### Screenshots
![electron-issue](https://user-images.githubusercontent.com/5503002/93387857-3fc9b300-f840-11ea-9335-bf32a3ddea08.png)
![electron-issue](https://user-images.githubusercontent.com/5503002/93387860-40fae000-f840-11ea-938e-09c62f06f06b.gif)


### Additional Information
Upgrading an app built on Electron 7.1.2 that had printing working before

shell/browser/api/electron_api_web_contents.cc
blink::CloneableMessage arguments) {
  TRACE_EVENT1("electron", "WebContents::MessageHost", "channel", channel);
   webContents.emit('ipc-message-host', new Event(), channel, args);
  EmitWithSender("ipc-message-host", receivers_.current_context(),
                 InvokeCallback(), channel, std::move(arguments));
}
void WebContents::UpdateDraggableRegions(
    std::vector<mojom::DraggableRegionPtr> regions) {
  for (ExtendedWebContentsObserver& observer : observers_)
    observer.OnDraggableRegionsUpdated(regions);
}
void WebContents::RenderFrameDeleted(
    content::RenderFrameHost* render_frame_host) {
   A RenderFrameHost can be destroyed before the related Mojo binding is
   closed, which can result in Mojo calls being sent for RenderFrameHosts
   that no longer exist. To prevent this from happening, when a
   RenderFrameHost goes away, we close all the bindings related to that
   frame.
  auto it = frame_to_receivers_map_.find(render_frame_host);
  if (it == frame_to_receivers_map_.end())
    return;
  for (auto id : it->second)
    receivers_.Remove(id);
  frame_to_receivers_map_.erase(it);
}
void WebContents::DidStartNavigation(