protected virtual void OnTargetSizeChanged(SizeChangedEventArgs e)
{
var handler = this.TargetSizeChanged;
if (handler != null)
handler (this, e);
}
private void OnTargetSizeChanged(object sender, SizeChangedEventArgs e)
{
var bounds = new Rectangle(0, 0, e.Size.Width, e.Size.Height);
_resizer.Resize(_browserHost.WindowHandle, bounds);
}