GCC: SizeBounds setters cannot be constexpr

As base::Optional move assignment operator is not constexpr, the
setters using it cannot be constexpr either.

Bug: 819294
Change-Id: I0c6e0325728f05ff9d6d892a3508ebb1b21a85c3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2041611
Reviewed-by: Allen Bauer <kylixrd@chromium.org>
Commit-Queue: José Dapena Paz <jdapena@igalia.com>
Cr-Commit-Position: refs/heads/master@{#742834}
1 file changed