SkRefCnt, SkTypes: fix includes for clients

Change-Id: I1cfdc03963eaab9687608974958d20411806cfeb
Reviewed-on: https://skia-review.googlesource.com/136592
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
2 files changed