[2/4](resend)strmbase: implement BaseControlWindow

[Nikolay Sivov]

On 3/16/2012 04:00, Aric Stewart wrote:
> +HRESULT WINAPI BaseControlWindowImpl_GetTypeInfo(IVideoWindow *iface, UINT iTInfo, LCID lcid, ITypeInfo**ppTInfo)
> +{
> +    BaseControlWindow*  This = (BaseControlWindow*)iface;
> +
It doesn't look like a normal COM interface (lack of refcount for 
example, and corresponding IUnknown support), but I think it's still 
better to use a cleaner way to get impl pointer like all others do now - 
with impl_from_*() functions.