Add unit test for SkDeferredDisplayLists (take 2)

Change-Id: I76a4c77d5b9418cb7fe677bd55ba32a2e336924d
Reviewed-on: https://skia-review.googlesource.com/79820
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
12 files changed