Add unit test for SkDeferredDisplayLists

Change-Id: I015094145cb0af6cfe368c570a5d5280c11c8f28
Reviewed-on: https://skia-review.googlesource.com/78660
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
10 files changed