* **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
CommonWebContentsDelegate::ExitFullscreenModeForTab(source);
  Emit("leave-html-full-screen");
}
void WebContents::RendererUnresponsive(
    content::WebContents* source,
    content::RenderWidgetHost* render_widget_host,
    base::RepeatingClosure hang_monitor_restarter) {
  Emit("unresponsive");
}
void WebContents::RendererResponsive(
    content::WebContents* source,
    content::RenderWidgetHost* render_widget_host) {
  Emit("responsive");
  for (ExtendedWebContentsObserver& observer : observers_)
    observer.OnRendererResponsive();
}
bool WebContents::HandleContextMenu(content::RenderFrameHost* render_frame_host,
                                    const content::ContextMenuParams& params) {
  if (params.custom_context.is_pepper_menu) {
    Emit("pepper-context-menu", std::make_pair(params, web_contents()),
         base::BindOnce(&content::WebContents::NotifyContextMenuClosed,
                        base::Unretained(web_contents()),
                        params.custom_context));
  } else {
    Emit("context-menu", std::make_pair(params, web_contents()));
  }
  return true;
}
bool WebContents::OnGoToEntryOffset(int offset) {