Minor code clean-ups with no behavior change
As another preparation CL to work on Bug 7254002, this CL cleans up
miscellaneous minor coding style issues that do not cause any
user-visible problems.
- Add final keyboard to classes that are not intended to be extended.
- Add static keyboard to nested classes if possible.
- Fix a typo in log message.
- Remove a redundant synchronized keyword in method signature.
- Remove unused class fields.
Test: checkbuild
Bug: 7254002
Change-Id: I3b54179116a74cafc99a3dfd3f2a429a7111c12e
3 files changed