GitLab

There are some extremely useful DCHECKs that placeholders are used,
but they are behind NDEBUG right now, so the normal CQ bots (which
build with release + DCHECK_ALWAYS_ON) do not run them, and instead
bugs of this type are caught on the waterfall by debug bots.

To avoid that, enable these DCHECKs on builds with DCHECK_ALWAYS_ON.

Bug: None
Change-Id: I87d2d73dda42e9ba4235bd2c80cd10bbb80e5c40
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2492303Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#820043}