GitLab

CustomElement::Registry() can return nullptr.

Bug: 906704
Change-Id: I5f3f87266526c97489b658668e15a38069fef033
Reviewed-on: https://chromium-review.googlesource.com/c/1343412Reviewed-by: Hayato Ito <hayato@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609613}