Add HandshakeHandler.

Will submit after
https://googleplex-android-review.googlesource.com/c/platform/packages/modules/Nearby/+/16032717,
where GattConnectionManager is added.

Test: skip test due to missing testing framework. Will be added later
per http://b/202524672.

Bug: 200231384
Change-Id: I8e5d197875385599a270fd6ba7ce8971d343ae64
1 file changed
tree: 909c25ffe9e8ac777185ff4495ac078396422930
  1. nearby/