GitLab

Switches components_perftests to use PerfResultReporter instead of
PrintResult directly and whitelists it for conversion to histograms
before uploading to the perf dashboard.

This ends up changing most reported stories/metrics, so old data on the
dashboard will need to be migrated and alert patterns updated.

Bug: 923564
Change-Id: If6ed8ebec6c6c15e2ae48a54d2e7e1a7f3a04bb7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1797495Reviewed-by: Daniel Rubery <drubery@chromium.org>
Reviewed-by: Peng Huang <penghuang@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Charlie Harrison <csharrison@chromium.org>
Reviewed-by: ssid <ssid@chromium.org>
Commit-Queue: Brian Sheedy <bsheedy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#701219}