Migrate to androidx packages for support library. am: 89fe277a87
am: 7e46280f7d

Change-Id: If7ab37cea245b9ff6db093e0c8ad43a78824700f
tree: 6805a850a417cef1946921b1b4345bd240978e0a
  1. res/
  2. src/
  3. Android.mk
  4. AndroidManifest.xml
  5. PREUPLOAD.cfg