- Electron version:
  1.3.3
- Operating system:
  OSX El Capitan 10.11.6

The following code crashes Electron. The dev tools don't open, but the HTML element highlights like it is open.

``` javascript
selfBrowserWindow.webContents.openDevTools({mode: 'detach'})
selfBrowserWindow.inspectElement(rightClickPosition.x, rightClickPosition.y)
```

The reason I'm doing this is because I want to open the dev tools detached, then inspect. Calling inspectElement first will open the dev tools docked by default.

atom/browser/api/atom_api_web_contents.cc
PrintSettings* out) {
    mate::Dictionary dict;
    if (!ConvertFromV8(isolate, val, &dict))
      return false;
    dict.Get("silent", &(out->silent));
    dict.Get("printBackground", &(out->print_background));
    return true;
  }
};
template<>
struct Converter<WindowOpenDisposition> {
  static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,
                                   WindowOpenDisposition val) {
    std::string disposition = "other";
    switch (val) {
      case CURRENT_TAB: disposition = "default"; break;
      case NEW_FOREGROUND_TAB: disposition = "foreground-tab"; break;
      case NEW_BACKGROUND_TAB: disposition = "background-tab"; break;
      case NEW_POPUP: case NEW_WINDOW: disposition = "new-window"; break;
      default: break;
    }
    return mate::ConvertToV8(isolate, disposition);
  }
};
template<>
struct Converter<net::HttpResponseHeaders*> {
  static v8::Local<v8::Value> ToV8(v8::Isolate* isolate,