LSC: Replace deprecated thread annotations macros.
LSC: Replace deprecated thread annotations macros.

Abseil thread annotation macros are now prefixed by ABSL_.

There is no semantic change; this is just a rename.
The edits were generated by devtools/cymbal/tools/run_clang_mr_refactor.sh

LSC documentation: go/absl-prefixed-thread-annotations-lsc
LSC approval http://b/135729553

Tested: TGP

Tested:
    TAP --sample ran all affected tests and none failed
    http://test/OCL:265862636:BASE:265839422:1566982650751:76646382
PiperOrigin-RevId: 265958257
Change-Id: Idaa812b2d95b5a0dc6a2383bf2e3f7bcf635ce5a

google/quiche,google/quiche,google/quiche,google/quiche