* 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/ui/views/win_frame_view.cc
#include "atom/browser/ui/views/win_frame_view.h"
#include "atom/browser/native_window_views.h"
#include "ui/views/widget/widget.h"
#include "ui/views/win/hwnd_util.h"
namespace atom {
namespace {
const char kViewClassName[] = "WinFrameView";
}  
WinFrameView::WinFrameView() {
}
WinFrameView::~WinFrameView() {
}
gfx::Rect WinFrameView::GetWindowBoundsForClientBounds(
    const gfx::Rect& client_bounds) const {
  return views::GetWindowBoundsForClientBounds(
      static_cast<views::View*>(const_cast<WinFrameView*>(this)),
      client_bounds);
}
int WinFrameView::NonClientHitTest(const gfx::Point& point) {
  if (window_->has_frame())
    return frame_->client_view()->NonClientHitTest(point);
  else
    return FramelessView::NonClientHitTest(point);
}
const char* WinFrameView::GetClassName() const {
  return kViewClassName;
}
}