Also requires a recipe change so the results processor switches to
histogram mode when this CL is landed.
Bug: chromium:1029452
Change-Id: Ic09deefc3f4f9d7a82ffeafeb5209fcfc361aece
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/171683
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Commit-Queue: Patrik Höglund <phoglund@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30884}