[PATCH] dhtmled.ocx: Implement IOleObject::SetExtent and IOleObject::GetExtent functions

[Vijay Kiran Kamuju]

This time without tests as the ocx file is not available from windows 7 &
IE 8

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=50697
Signed-off-by: Vijay Kiran Kamuju