Merge tag 'android-10.0.0_r20' into q

Android 10.0.0 Release 20 (QQ1C.191205.016.A1)

Change-Id: Ib8460ce3c84cbd69752e29ae4c8019bcaf739270
tree: 0393556f0285609907755bd05bc0c26bc3832988
  1. res/
  2. robolectric_tests/
  3. src/
  4. src_override/
  5. Android.mk
  6. AndroidManifest.xml