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The goal of this histogram isn't to measure which version the server is
expecting, but rather to upper bound how many differences (success OR failure)
there _could_ be if we changed to a locale-insensitive uppercasing approach.

Bug: 1051924
Change-Id: I8ed7471a6270b95e3cd1a4d8c808d23339321a02
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2438258Reviewed-by: David Schinazi <dschinazi@chromium.org>
Commit-Queue: Eric Roman <eroman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#812219}