GitLab

The renderer OOM metrics are stored in shared memory buffer so that the
browser can read the metrics after renderer crashes (by OOM).

BUG=843419

Change-Id: I498256e473785051724efa80864f0292cc24362e
Reviewed-on: https://chromium-review.googlesource.com/1062211
Commit-Queue: Siddhartha S <ssid@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#560219}