Clean up old references to SkXfermode
The class still exists, but all of these spots are really talking about
SkBlendMode (and have been for years).
There was also a leftover static helper function that did some
blend-mode analysis. It was used in exactly once place, so I just moved
it there.
Change-Id: I0d7cbbd6a72cfe18a038eb54ab1a9bac783d985d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/667576
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Brian Osman <brianosman@google.com>
10 files changed