Add comment to metrics.h

BUG=None
NOTRY=True
TBR=rkaplow@chromium.org,asapersson@webrtc.org

Review-Url: https://codereview.webrtc.org/2557693002
Cr-Commit-Position: refs/heads/master@{#15439}
This commit is contained in:
henrik.lundin 2016-12-06 03:58:58 -08:00 committed by Commit bot
parent 68d3213313
commit c9badd52c8

View File

@ -58,6 +58,9 @@
// };
//
// RTC_HISTOGRAM_ENUMERATION("WebRTC.Types", kTypeX, kBoundary);
//
// NOTE: It is recommended to do the Chromium review for modifications to
// histograms.xml before new metrics are committed to WebRTC.
// Macros for adding samples to a named histogram.