
All other AndroidX libraries have already increased their min SDK to 21. This change renames private symbols to remove `V21` suffixes and similar, but doesn't change public or protected symbols with similar names, to avoid needless breakages/churn on users of the library. Some of the dead code removal is more complex, so I've split it out into follow-up changes to make it easier to review. PiperOrigin-RevId: 651776556
Session test module
Tests cross-process use of the session module. To run the tests:
- Prepare a device (either an emulator or a real device) to run the tests on.
- Run
./gradlew :test-session-current:cAT