Replace UserInfo with user id in CarUserManager

- UserInfo is hidden API, and this blocks stub library build.
- To resolve the above issue, this CL will replace UserInfo with user id
in CarUserManager.

Bug: 146658683
Test: Build and run CarUserServiceTest.
Change-Id: I5eb5963fade657fcc74bfdd1e2034b79bd0a5df7
3 files changed
tree: 0b15284b25aafc94dd11b0db8cb268e9e3cdeb12
  1. car-bugreportd/
  2. car-default-input-service/
  3. car-lib/
  4. car-maps-placeholder/
  5. car-systemtest-lib/
  6. car-test-lib/
  7. car-usb-handler/
  8. car_product/
  9. computepipe/
  10. EncryptionRunner/
  11. evs/
  12. experimental/
  13. FrameworkPackageStubs/
  14. obd2-lib/
  15. procfs-inspector/
  16. service/
  17. tests/
  18. tools/
  19. user/
  20. vehicle-hal-support-lib/
  21. watchdog/
  22. .clang-format
  23. .gitignore
  24. Android.mk
  25. CleanSpec.mk
  26. OWNERS
  27. PREUPLOAD.cfg
  28. README.md
README.md

Native (C++) code format is required to be compatible with .clang-format file. Run

git clang-format --style=file --extension='h,cpp,cc' HEAD~

Note that clang-format is not desirable for Android java files. Therefore the command line above is limited to specific extensions.