This change saves us ~70KiB per compiler with just ~3KiB of cache.

BUG=492725

Change-Id: I7b8053c032c9c68f646162baf61abf6db3afe52e
Reviewed-on: https://chromium-review.googlesource.com/284003Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>