Remove deprectated GrContext::MakeGL overloads that take raw ptr

Change-Id: Iae12bf61fa1e2f5d4b13b98198cddb7482656fdf
Reviewed-on: https://skia-review.googlesource.com/118660
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
2 files changed