The amortized cost of a single invocation is actually O(1), not O(n).
But this whole comment is needless anyway, so just remove it.

R=ahaas@chromium.org
NOTRY=true

Change-Id: Icffaedcd784584b1676cd7ed323555177a62d63e
Reviewed-on: https://chromium-review.googlesource.com/997812Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52395}