Implement display/voice interaction mediator

- Display and voice interaction mediator are implemented.
- IVoiceInteractionManagerService doesn't provide a method to get the
current state. So, the mediator keeps track of the state internally.
- Mediators for components controled in HAL layer are not created.

Bug: 162600135
Test: manual test
Change-Id: I5ee4af119da9b08a70412eef54623147ea77a3b5
Merged-In: I5ee4af119da9b08a70412eef54623147ea77a3b5
(cherry picked from commit 23a40a92253ede841c7f4d9083e6326011d7716d)
7 files changed
tree: 8b632bce7e971e2d30644da70fecd97504404b39
  1. car-admin-ui-lib/
  2. car-bugreportd/
  3. car-internal-lib/
  4. car-lib/
  5. car-maps-placeholder/
  6. car-systemtest-lib/
  7. car-test-lib/
  8. car-usb-handler/
  9. car_product/
  10. cpp/
  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.