Implement DataBroker's add and remove metrics config methods

The implementation (1) converts protobuf pub/sub mapping into
internal pub/sub mapping, (2) adds subscribers to publishers, and
(3) remove channels

Bug: 189226787
Test: m CarService
Test: atest CarServiceUnitTest:DataBrokerUnitTest

Change-Id: I00bebdfe056a579a7faeca782b34fefc486e13de
8 files changed
tree: 0a801b96ce8e34d074f0ecab029e970c9239dcf0
  1. car-admin-ui-lib/
  2. car-internal-lib/
  3. car-lib/
  4. car-maps-placeholder/
  5. car-systemtest-lib/
  6. car-test-lib/
  7. car-usb-handler/
  8. car_product/
  9. cpp/
  10. data/
  11. experimental/
  12. FrameworkPackageStubs/
  13. obd2-lib/
  14. packages/
  15. procfs-inspector/
  16. service/
  17. tests/
  18. tools/
  19. user/
  20. vehicle-hal-support-lib/
  21. .clang-format
  22. .gitignore
  23. Android.mk
  24. CleanSpec.mk
  25. CPPLINT.cfg
  26. OWNERS
  27. PREUPLOAD.cfg
  28. README.md
  29. TEST_MAPPING
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.