Merge changes Ib67ad0da,Ie532f29a,Ieabc1777,Ied210b3e

* changes:
  Revert "Replace AssetManager with AssetManager2 implementation"
  Revert "Make idiomatic use of ApkAssets and AssetManager"
  Revert "libandroidfw: Add ApplyStyle and SetConfiguration benchmark"
  Revert "libandroidfw: Improve performance of AssetManager2"