Following a 2-pass approach for using the newer
wglChoosePixelFormat API. First we make a dummy window
in order to have a context. Then we try to use
wglChoosePixelFormat and delete the dummy window.
If a suitable pixel format is not found, revert back
to the older approach of using the GDI ChoosePixelFormat.

Change-Id: Ia366445f4e7192b5045bcf430c5493b7a187ded6