* 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
if (browser_view_) {
    web_view_->RemoveChildView(
        browser_view_->GetInspectableWebContentsView()->GetView());
    browser_view_ = nullptr;
  }
  if (!browser_view) {
    return;
  }
  
  
  browser_view_ = browser_view;
  web_view_->AddChildView(
      browser_view->GetInspectableWebContentsView()->GetView());
}
void NativeWindowViews::SetParentWindow(NativeWindow* parent) {