Handles SessionToken in CarEvsCameraPreviewActivity.

- Splits the part to request to start Evs in the seperate
  CarEvsCameraActivity.
- Fixes CarEvsService to handle SessionToken correctly.
- Removes isNewFrameAvailables() which can cause the concurrency
  problem and throwing the exception.
- If CarEvsServices goes to Inactive with 'null' callback (triggered
  by VHAL), it will remove all registered callbacks and stop.

Bug: 170792252
Bug: 179517136
Test: adb shell cmd car_service inject-vhal-event 0x11410f10 0,1  # On
Test: adb shell cmd car_service inject-vhal-event 0x11410f10 0,0  # Off
Test: mannualy click EVS icon from Launcher and check if EVS appears.
Change-Id: Ie3ab061e6ea8c25a3bab11241cf39ee1799e72ba
5 files changed
tree: cfe69edb092877ee0dae1df574ca86358fa3d6b5
  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.