GitLab

Include <cctype> since it declares std::toupper, in order to fix build
breakage on Windows.

Bug: 891867
Change-Id: I856286b390e152592951ccb318ec2260a6514073
Reviewed-on: https://chromium-review.googlesource.com/c/1259828
Commit-Queue: Victor Costan <pwnall@chromium.org>
Reviewed-by: Victor Costan <pwnall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#596693}