8fdc224330
https://en.wikipedia.org/wiki/Cache_replacement_policies indicates that this implementation is actually an LRU cache, not an MRU cache. An MRU cache evicts the most-recently-used item first. This CL also renames some variables and an enum for consistency, since it would be weird for an `mru_cache_` member to actually be an LRU cache. Change-Id: Ia52d7dbf18785620466d99d362633fe7ecf7fb41 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3214453 Reviewed-by: Daniel Cheng <dcheng@chromium.org> Owners-Override: Daniel Cheng <dcheng@chromium.org> Commit-Queue: Chris Fredrickson <cfredric@chromium.org> Cr-Commit-Position: refs/heads/main@{#931363}