match sRGB primaries with skcms

This should prevent lots of conversions between the two
gamuts when the matrix is nearly but not quite identity.

Change-Id: Icb6ba35d763e9fbd2d7fc6343d49fe2c542ec2ec
Reviewed-on: https://skia-review.googlesource.com/148990
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
1 file changed