f0eddf49f6
This CL adds transparent hashing and transparent equality comparisons to the std::unordered_map<std::string, Preference> that it keeps. This should be a no-op for any interactions with the map that involve a std::string: - Comparisons just forward to std::string comparisons. - Hashing for std::basic_string_view and std::basic_string is identical. However, this CL allows to use a std::string_view when calling std::unordered_map::find without requiring to convert the string_view to a std::string first. The CL takes advantage of that by replacing a few more const reference to std::string by std::string_view. This avoids potential heap allocations and reduces the binary size by ~3KB. Bug: 349741884 Change-Id: Ifcfd7638ee27f641097ad3929bc7fa58c4260b3d Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5658436 Code-Coverage: findit-for-me@appspot.gserviceaccount.com <findit-for-me@appspot.gserviceaccount.com> Commit-Queue: Jan Keitel <jkeitel@google.com> Reviewed-by: Dominic Battré <battre@chromium.org> Cr-Commit-Position: refs/heads/main@{#1320204}