* Electron version: 1.4.15
* Operating system: Windows 10

### Actual behavior

Height is oversized by exactly 8px consistently (taskbar is set to small icons).

![Alt](https://raw.githubusercontent.com/adi518/electron-frameless-maximize-test/master/issue.jpg)

### How to reproduce

https://github.com/adi518/electron-frameless-maximize-test
atom/browser/native_window_views.cc
static_cast<NativeWindowViews*>(contents_view())->RequestToClosePage();
    return false;
  }
 private:
  DISALLOW_COPY_AND_ASSIGN(NativeWindowClientView);
};
}  
NativeWindowViews::NativeWindowViews(
    brightray::InspectableWebContents* web_contents,
    const mate::Dictionary& options,
    NativeWindow* parent)
    : NativeWindow(web_contents, options, parent),
      window_(new views::Widget),
      web_view_(inspectable_web_contents()->GetView()->GetView()),
      browser_view_(nullptr),
      menu_bar_autohide_(false),
      menu_bar_visible_(false),
      menu_bar_alt_pressed_(false),
#if defined(OS_WIN)
      checked_for_a11y_support_(false),
      thick_frame_(true),
#endif
      keyboard_event_handler_(new views::UnhandledKeyboardEventHandler),
      disable_count_(0),
      use_content_size_(false),
      movable_(true),
      resizable_(true),
      maximizable_(true),
      minimizable_(true),
      fullscreenable_(true) {