See
https://clang.llvm.org/extra/clang-tidy/checks/modernize-use-override.html
for more on this warning.

Bug: v8:10488
Change-Id: I6805441fa24c80776cf94d18ff389c4c67bb5abd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2186635
Commit-Queue: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67640}