This CL addresses the review comments for https://webrtc-review.googlesource.com/c/src/+/261221 in the downstream cherry-pick: https://crrev.com/c/4660950. * Always use size_t{} for casting. * Remove unneeded size_t casts. * Avoid using __x as it is reserved for the compiler. Bug: b:217226507 Change-Id: I13c57cb69d7db066ac9a6dbd15b7f6de54abb613 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/311360 Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org> Commit-Queue: Li-Yu Yu <aaronyu@google.com> Cr-Commit-Position: refs/heads/main@{#40395}