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
#ifndef ATOM_BROWSER_NATIVE_WINDOW_H_
#define ATOM_BROWSER_NATIVE_WINDOW_H_
#include <map>
#include <string>
#include <vector>
#include "atom/browser/native_window_observer.h"
#include "atom/browser/ui/accelerator_util.h"
#include "base/cancelable_callback.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/supports_user_data.h"
#include "content/public/browser/readback_types.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
#include "extensions/browser/app_window/size_constraints.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/image/image_skia.h"
class SkRegion;