Add support for allocating mips inside of ColorSpaceXormImageGenerator

Bug: skia:
Change-Id: Ie0052e6591bcf1ae46d10d5026a6e4d06d2c3052
Reviewed-on: https://skia-review.googlesource.com/57360
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
1 file changed