Added system player to car kitchen sink app

Added audio attribute system usage's test player to car audio kitchen
sink test fragment. With this, user can select different system audio
attribute usages to test audio routing and playback.

Bug: 186442942
Bug: 186661937
Bug: 186158497
Test: build and run car emulator, use kitchen sink to play system audio
Change-Id: I908e72355030926fccb35c0e857e62a16d131a59
13 files changed
tree: 6e99f724abb7a2d0b1249bd922794dd426cef116
  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.