[perf] Add load:news:nytimes:2018 system health story

Bug: 878390
Change-Id: I7dd274d816f8833bdabe890628b92f701612ffed
Reviewed-on: https://chromium-review.googlesource.com/c/1264659
Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Commit-Queue: Ulan Degenbaev <ulan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#597532}