* Electron Version: v2.0.1
* Operating System (Platform and Version): windows10
* Last known working Electron version: 1.7.9

Allow frameless transparent windows to be sized smaller than 64x64 on Windows #12923

but，now, it can't bigger than 64x64 on Windows
my `height/width` don't work
when i set `frame: true`, it can't resize
remove `transparent: true`, all work right
![2018-05-18 11_14_17](https://user-images.githubusercontent.com/12164900/40214332-aac2815e-5a8c-11e8-8aa1-38ec2a427e0a.gif)

atom/browser/native_window.cc
#endif
  std::string color;
  if (options.Get(options::kBackgroundColor, &color)) {
    SetBackgroundColor(ParseHexColor(color));
  } else if (!transparent()) {
    
    SetBackgroundColor(SK_ColorWHITE);
  }
  std::string title(Browser::Get()->GetName());
  options.Get(options::kTitle, &title);
  SetTitle(title);
  
  bool show = true;
  options.Get(options::kShow, &show);
  if (show)
    Show();
}
bool NativeWindow::IsClosed() const {
  return is_closed_;
}
void NativeWindow::SetSize(const gfx::Size& size, bool animate) {
  SetBounds(gfx::Rect(GetPosition(), size), animate);
}
gfx::Size NativeWindow::GetSize() {
  return GetBounds().size();
}
void NativeWindow::SetPosition(const gfx::Point& position, bool animate) {
  SetBounds(gfx::Rect(position, GetSize()), animate);
}
gfx::Point NativeWindow::GetPosition() {