* Electron version: 1.6.0, does _not_ repro in 1.4.x
* Operating system: Win32 tested, others possible

It appears that even if you create a window with `focusable: false` and `show: false`, calling `loadURL` on it will cause it to accept window focus and for other windows to lose focus.

### How to reproduce

Open the default Electron app

```js
BW = require('electron').remote.BrowserWindow
let ourWindow = BW.getFocusedWindow()
ourWindow.on('blur', () => console.log("Lost it!"))

hidden = new BW({show: false, width: 500, height: 500, focusable: false})
hidden.loadURL("http://www.yahoo.com")

>>> "Lost it!"
```

This breaks anyone using background windows for computation such as VS Code and Slack (via electron-remote), because whenever a background task kicks off, users can't type anymore
atom/browser/native_window_views.cc
window_->SetFullscreen(fullscreen);
#else
  if (IsVisible())
    window_->SetFullscreen(fullscreen);
  else if (fullscreen)
    window_->native_widget_private()->ShowWithWindowState(
        ui::SHOW_STATE_FULLSCREEN);
  
  if (fullscreen)
    SetMenuBarVisibility(false);
  else
    SetMenuBarVisibility(!menu_bar_autohide_);
#endif
}
bool NativeWindowViews::IsFullscreen() const {
  return window_->IsFullscreen();
}
void NativeWindowViews::SetBounds(const gfx::Rect& bounds, bool animate) {
#if defined(USE_X11)
  
  
  if (!resizable_) {
    SetMaximumSize(bounds.size());
    SetMinimumSize(bounds.size());
  }
#endif
  window_->SetBounds(bounds);
}
gfx::Rect NativeWindowViews::GetBounds() {