GitLab

Properly have 'new' terminate on oom and set the discardable memory
allocator so that it can be used.

Bug: chromium:993654
Change-Id: I9d26135447f8174d528ac1e44dc6165cfcf93233
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1754530Reviewed-by: enne <enne@chromium.org>
Commit-Queue: Ben Wagner <bungeman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#687412}