restore identity check

Needed to pass assumptions in cc_unittests.

Bug: skia:11004
Change-Id: Ie70ab06908c24f88a72c6a0e07033e1be4f6a7cf
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/338936
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
1 file changed