Merge changes from topic "reason-boot-after-ml"

* changes:
  Align the boot dexopt pass in the legacy code with ART Service.
  Clean up old code that only applied to upgrades from Android older than N.
  Break out the legacy to ART Service reason conversion code.
  Give access to the DexOptHelper object in the onDexoptDone callback.
  Use ART Service to clear app profiles when it is enabled.