GitLab

Steps to replicate:
1. Build clang-tidy and clang-apply-replacements as described here: https://chromium.googlesource.com/chromium/src/+/lkcr/docs/clang_tidy.md
2. Build targets necessary for the change in out/gn.
3. Generate the compilation database:
  tools/clang/scripts/generate_compdb.py -p out/gn > compile_commands.json
4. Run clang-tidy and apply replacements:
  cd out/gn && PATH_TO_RUN_CLANG_TIDY/run-clang-tidy.py -p ../../ -clang-tidy-binary PATH_TO_CLANG_TIDY_BINARY -clang-apply-replacements-binary PATH_TO_CLANG_APPLY_REPLACEMENTS_BINARY -checks=-*,modernize-use-nullptr -fix -j 8 DIR_TO_CONVERT

Bug: 403854, 776257
Change-Id: Ifd0c147ac6866beacffbddb0c56b20502cb4f127
Reviewed-on: https://chromium-review.googlesource.com/732308Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Ivan Kotenkov <kotenkov@yandex-team.ru>
Cr-Commit-Position: refs/heads/master@{#511144}