* **Electron Version** (output of `node_modules/.bin/electron --version`):
  * v4.0.5
* **Operating System** (Platform and Version):
  *  Windows 10 

### Expected Behavior
using  webContents api to print an html file oriention  set to landscape in default printer settings and page size set to A5, 

mainWindow.webContents.print({ silent: true, printBackground: false, deviceName: 'HP LaserJet 1020' })

My issue is : it is not printing as defined in the default printer settings

but it currently printing is deviceName not set

and need to send mainWindow.webContents.print() api to silently and printer name 

### To Reproduce
If you provide a URL, please list the commands required to clone/setup/run your repo e.g.
```sh
$ git clone git@github.com:shabeer-mdy/electron-quick-start.git
$ npm install
$ npm start || electron .
```
and set any printer name to  mainWindow.webContents.print({ silent: true, printBackground: false, deviceName: 'HP LaserJet 1020' })

set any installed printer name 



shell/browser/api/atom_api_web_contents.cc
const base::FilePath& full_file_path,
    const content::SavePageType& save_type) {
  util::Promise promise(isolate());
  v8::Local<v8::Promise> handle = promise.GetHandle();
  auto* handler = new SavePageHandler(web_contents(), std::move(promise));
  handler->Handle(full_file_path, save_type);
  return handle;
}
void WebContents::OpenDevTools(mate::Arguments* args) {
  if (type_ == Type::REMOTE)
    return;
  if (!enable_devtools_)
    return;
  std::string state;
  if (type_ == Type::WEB_VIEW || !owner_window()) {
    state = "detach";
  }
  bool activate = true;
  if (args && args->Length() == 1) {
    mate::Dictionary options;
    if (args->GetNext(&options)) {
      options.Get("mode", &state);
      options.Get("activate", &activate);
    }
  }
  managed_web_contents()->SetDockState(state);
  managed_web_contents()->ShowDevTools(activate);
}
void WebContents::CloseDevTools() {