The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e36e815c6eb980950d111a9f793eb383f3eec976

commit e36e815c6eb980950d111a9f793eb383f3eec976
Author: Wei Guan <weigua@chromium.org>
Date: Tue Aug 14 19:26:06 2018

Indicate what types of perception were run in a perception sample.

Currently all available perception results are added to the perception
sample as entities. When there are no entities, we dont know if there
were no entities detected, or no detections were run at all.

BUG=872764

Change-Id: I18d4b0f1a0e285f030e5d6f64a4c62c0dc23ae07
Reviewed-on: https://chromium-review.googlesource.com/1169311
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Toni Baržić <tbarzic@chromium.org>
Commit-Queue: Wei Guan <weigua@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582994}
[modify] https://crrev.com/e36e815c6eb980950d111a9f793eb383f3eec976/chromeos/dbus/proto/media_perception.proto
[modify] https://crrev.com/e36e815c6eb980950d111a9f793eb383f3eec976/extensions/browser/api/media_perception_private/conversion_utils.cc
[modify] https://crrev.com/e36e815c6eb980950d111a9f793eb383f3eec976/extensions/browser/api/media_perception_private/conversion_utils_unittest.cc
[modify] https://crrev.com/e36e815c6eb980950d111a9f793eb383f3eec976/extensions/common/api/media_perception_private.idl

Triage nag: This Chrome OS bug has an owner but no component. Please add a component so that this can be tracked by the relevant team.

<UI triage> Bug owners, please add the appropriate component to your bug. Thanks!

<triage>Using Enterprise component for CfM</triage>