Respect if texture proxy will have mips or not when computing size

Bug: skia:
Change-Id: I47239ae68c103f29a8c8c2a2a5d8940c2c1d95fc
Reviewed-on: https://skia-review.googlesource.com/63001
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
2 files changed