Fix missing include for <ratio> used for std::nano. Bug: b/412761856 Change-Id: I7535e7176e4372df6948f903504594e448153d48 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6961860 Commit-Queue: Geoff Lang <geofflang@chromium.org> Auto-Submit: Loko Kung <lokokung@google.com> Commit-Queue: Loko Kung <lokokung@google.com> Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>