A missing negation (typo in previous refactoring) had effectively
disabled this optimization.

Bug: chromium:904104
Change-Id: I3f8d26c7594fcaa762e0a9c992b4cb0bf1bc53f6
Reviewed-on: https://chromium-review.googlesource.com/c/1329690Reviewed-by: Benedikt Meurer <bmeurer@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57422}