First step of many
* Pulls SkLiteDL and SkLiteRecorder into HWUI
* forceDark shifted to be a sync-time transformation
instead of record time. No meaningful behavior change,
but much more flexible heuristics are possible this
way.
Test: build, poked around with forceDark on
Change-Id: I7b7cec5b7fd7c2b18823b4d92d821cf5898f9b88
8f45d4afd9