GitLab

Convert this test to a testharness test. With CL:823582 this test does
not crash, and does crash prior to that change.

Note: this test uses shadomDOM V0 registerElement and createShadowRoot
since the crash does not reproduce when using shadowDOM V1 methods.

Bug: 789094, 804047
Change-Id: Ia65c2f75b805ed99a7401d5b64110601f917a5d7
Reviewed-on: https://chromium-review.googlesource.com/c/1278456Reviewed-by: Hayato Ito <hayato@chromium.org>
Reviewed-by: Alan Cutter <alancutter@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#599566}