Add SkImage::makeColorTypeAndColorSpace

This works like makeColorSpace, but allows changing color type as well.
Added a GM to test, although the GM demonstrates several ways this can
fail (especially when using this on lazy images).

For simple use-cases (8888 <-> F16), everything should be fine.

Bug: skia:8618
Change-Id: If4c173c0dd4abaf4f8e63b7ae0ffcf8a08c7e9ef
Reviewed-by: Brian Salomon <>
Commit-Queue: Mike Klein <>
11 files changed