tree 0a20f635656d535f5af9d4b061348254c71bffef
parent 95b12df50fae65a785ddb82626ca8d1831a698e8
author asedeno <asedeno@google.com> 1789671163 -0700
committer Copybara-Service <copybara-worker@google.com> 1789671244 -0700

More OSS QUICHE build fixes.

Use `testing::IsNull()` instead of `nullptr` in `EXPECT_CALL` with callbacks,
similar to an earlier fix.

Also clean up some warnings by adding some `override`s in places.

PiperOrigin-RevId: 983330711