GitLab

This debugging reporter will cache metrics events that will be used
for debugging purposes. The reporter is currently configured to cache
5 items (controlled by a static variable BUFFER_SIZE).

Bug: 843251
Change-Id: I09a63200db01819df56474c831ad9260f75d9432
Reviewed-on: https://chromium-review.googlesource.com/1056413
Commit-Queue: Brandon Wylie <wylieb@chromium.org>
Reviewed-by: Patrick Noland <pnoland@chromium.org>
Reviewed-by: Filip Gorski <fgorski@chromium.org>
Cr-Commit-Position: refs/heads/master@{#561583}