Squashed commit of the following:

commit 3fa5f3ce910f34da0cedb8bcce1bd593db7eb740
Author: Andreas Huber <andih@google.com>
Date:   Thu Aug 27 14:48:54 2009 -0700

    Getting rid of more code now obsolete with the departure of OMXDecoder.

commit e0d923ec0c7bb60bec8eb97739036a4c70c0feef
Author: Andreas Huber <andih@google.com>
Date:   Thu Aug 27 14:33:06 2009 -0700

    Remove obsoleted OMXDecoder class. OMXDecoder is dead, long live OMXCodec.