Promote some checks around unused params/decls to error & fix violations

Bug: 134590767
Test: m apexd
Test: atest apexservice_test
Test: atest apex_database_test
Test: atest apex_file_test
Test: atest apex_manifest_test
Change-Id: Icfdbf79448f1c5287de83d28f8f75158d7214b73
6 files changed
tree: 79e36f58119573975793fa2df64989426d58916c
  1. apexd/
  2. apexer/
  3. docs/
  4. proto/
  5. shim/
  6. tests/
  7. CleanSpec.mk
  8. OWNERS
  9. PREUPLOAD.cfg