Fix ImageTest to check if gpu mip maps are supported.

Bug: skia:
Change-Id: Iccef46cb61926f8cfdf29c8a095566d4b4ecda61
Reviewed-on: https://skia-review.googlesource.com/134516
Auto-Submit: Greg Daniel <egdaniel@google.com>
Reviewed-by: Chris Dalton <csmartdalton@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
1 file changed