* **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
web_contents()->Undo();
}
void WebContents::Redo() {
  web_contents()->Redo();
}
void WebContents::Cut() {
  web_contents()->Cut();
}
void WebContents::Copy() {
  web_contents()->Copy();
}
void WebContents::Paste() {
  web_contents()->Paste();
}
void WebContents::PasteAndMatchStyle() {
  web_contents()->PasteAndMatchStyle();
}
void WebContents::Delete() {
  web_contents()->Delete();
}
void WebContents::SelectAll() {
  web_contents()->SelectAll();
}
void WebContents::Unselect() {
  web_contents()->CollapseSelection();
}
void WebContents::Replace(const base::string16& word) {
  web_contents()->Replace(word);
}
void WebContents::ReplaceMisspelling(const base::string16& word) {