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
virtual bool IsVisibleOnAllWorkspaces() = 0;
  
  virtual void FocusOnWebView();
  virtual void BlurWebView();
  virtual bool IsWebViewFocused();
  
  
  virtual void CapturePage(const gfx::Rect& rect,
                           const CapturePageCallback& callback);
  
  virtual void ShowDefinitionForSelection();
  
  virtual void SetAutoHideMenuBar(bool auto_hide);
  virtual bool IsMenuBarAutoHide();
  virtual void SetMenuBarVisibility(bool visible);
  virtual bool IsMenuBarVisible();
  
  double GetAspectRatio();
  gfx::Size GetAspectRatioExtraSize();
  void SetAspectRatio(double aspect_ratio, const gfx::Size& extra_size);
  base::WeakPtr<NativeWindow> GetWeakPtr() {
    return weak_factory_.GetWeakPtr();
  }
  
  virtual void RequestToClosePage();
  
  virtual void CloseContents(content::WebContents* source);
  virtual void RendererUnresponsive(content::WebContents* source);
  virtual void RendererResponsive(content::WebContents* source);
  virtual void HandleKeyboardEvent(