Changes to gl BGRA renderbuffer format support.

Change-Id: Ic46057ed1f85e368fd55148beaa3f7e2ae54a042
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/227398
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
1 file changed