fix bookmaker

make SkImage::makeColorSpace include match docs.

R=brianosman@google.com

Docs-Preview: https://skia.org/?cl=141086
Bug: skia:6818
Change-Id: Ica65effdd05c2d8d731d1d1773fb80798be0274b
Reviewed-on: https://skia-review.googlesource.com/141086
Commit-Queue: Cary Clark <caryclark@skia.org>
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
Reviewed-by: Cary Clark <caryclark@skia.org>
Auto-Submit: Cary Clark <caryclark@skia.org>
4 files changed