Make SkImage_Lazy always report the color space of its data

Legacy clients are likely to ignore this information, but there are
cases (using SkColorSpaceXformCanvas) where getting accurate information
is important.

Bug: skia:
Change-Id: Ia56170559c82299375021c813424098ffc627b02
Reviewed-on: https://skia-review.googlesource.com/43562
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2 files changed