Dragging any border of a window with `setAspectRatio` does not make the window larger. But it works if you want to make window smaller.

Steps to reproduce:
1) `git clone https://github.com/electron/electron-quick-start`
2) add `mainWindow.setAspectRatio(16/9)`

Result:
![may-04-2016 22-43-17](https://cloud.githubusercontent.com/assets/313152/15027045/40944fba-124a-11e6-8528-472d956d2317.gif)
- Electron version: 0.37.8
- Operating system: OS X 10.11.3

atom/browser/native_window.h
const std::vector<DraggableRegion>& regions);
  
  void RenderViewCreated(content::RenderViewHost* render_view_host) override;
  void BeforeUnloadDialogCancelled() override;
  bool OnMessageReceived(const IPC::Message& message) override;
 private:
  
  void ScheduleUnresponsiveEvent(int ms);
  
  void NotifyWindowUnresponsive();
  
  void OnCapturePageDone(const CapturePageCallback& callback,
                         const SkBitmap& bitmap,
                         content::ReadbackResponse response);
  
  bool has_frame_;
  
  bool transparent_;
  
  
  scoped_ptr<SkRegion> draggable_region_;  
  
  extensions::SizeConstraints size_constraints_;
  
  bool enable_larger_than_screen_;
  
  bool is_closed_;
  
  bool has_dialog_attached_;