GitLab

Fix overrides and remove a bunch of calls to new.

Change-Id: Icac6516cae60dfcde967540022262088dc230f74
Reviewed-on: https://chromium-review.googlesource.com/1188040Reviewed-by: Tommy Li <tommycli@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585921}