Update GLDEBUGPROCARB to the latest spec version

The latest spec version has the userParam argument to be const GLvoid*,
and this is reflected in the ANGLE headers. Update the header to avoid
type mismatch which UBSAN sees as a security issue.

Bug: 788949
Change-Id: If16c77501c42412106c47c8427bc799d3d7c3db5
1 file changed