Merge changes I572ef7cd,I4bb036ab,Icb2b9bc1,I6c9d9b6e,I7e3d9c3b, ...

* changes:
  Updated licenses for v22 release.
  Show "Calling accounts" for all users in DialerSettingsActivity
  Fix an AOSP build error caused by bottom sheet states.
  Check phone capabilities.
  Improve Coalescer performance
  Fix drag and drop crash.
  Fix bug that RTT call is conferenceable with voice call.
  Fully expand the bottom sheet when touch exploration is enabled.