* Output of `node_modules/.bin/electron --version`: 2.0.12
* Operating System (Platform and Version): macOS 10.14

**Expected Behavior**
When having a window in simple fullscreen and you change display metrics or change from 1 monitor to 2 the window should size according to the new dimensions.

**Actual behavior**
The window size does not change when display metrics change.

**To Reproduce**
* Run Fiddle: https://gist.github.com/bpasero/e4013ea83033a8c231f58f94c0df57c3
* Change display metrics or change monitor count

=> the window is wrongly sized now and needs a transition from normal back to fullscreen to recover.
shell/browser/native_window.h
bool transparent_ = false;
  
  extensions::SizeConstraints size_constraints_;
  
  bool enable_larger_than_screen_ = false;
  
  bool is_closed_ = false;
  
  
  double sheet_offset_x_ = 0.0;
  double sheet_offset_y_ = 0.0;
  
  
  double aspect_ratio_ = 0.0;
  gfx::Size aspect_ratio_extraSize_;
  
  NativeWindow* parent_ = nullptr;
  
  bool is_modal_ = false;
  
  std::list<NativeBrowserView*> browser_views_;
  
  base::ObserverList<NativeWindowObserver> observers_;
  
  base::string16 accessible_title_;
  base::WeakPtrFactory<NativeWindow> weak_factory_{this};
  DISALLOW_COPY_AND_ASSIGN(NativeWindow);
};
class NativeWindowRelay