Add shading language version to GL dump

Bug: skia:6759
Change-Id: I021a8487ccb1d127b2005285e439be34d644f333
Reviewed-on: https://skia-review.googlesource.com/20905
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
1 file changed