SkImage::textureSize replacement for GrDirectContext::ComputeImageSize.

Bug: skia:11208
Change-Id: I7ee1084c17b0d9a0ba82eed0ac69d0fa51f2cecf
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/369317
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
6 files changed