Update color space API in examples

Bug: skia:
Change-Id: I2304a7265ebae8dc67f9ddf3f94aa7c4d5eb2e26
Reviewed-on: https://skia-review.googlesource.com/c/187388
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2 files changed