Add new video metrics from webrtc to histograms.xml.

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 6a4ad97286e1f0b2b03b1fbbe8d3f3843383b9b8..ea577b7e2c324f4113582185d5eba386b574e27c 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -39097,6 +39097,111 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="WebRTC.Video.DiscardedPacketsInPercent" units="%">
+  <owner>asapersson@chromium.org</owner>
+  <summary>
+    Percentage of discarded packets by the jitter buffer due to arriving too
+    late for a received video stream. Recorded when a stream is removed.
+  </summary>
+</histogram>
+
+<histogram name="WebRTC.Video.DuplicatedPacketsInPercent" units="%">
+  <owner>asapersson@chromium.org</owner>
+  <summary>
+    Percentage of duplicated packets in the jitter buffer for a received video
+    stream. Recorded when a stream is removed.
+  </summary>
+</histogram>
+
+<histogram name="WebRTC.Video.FirPacketsReceivedPerMinute"
+    units="packets/minute">
+  <owner>asapersson@chromium.org</owner>
+  <summary>
+    The number of received RTCP FIR packets per minute for a sent video stream.
+    Recorded when a stream is removed. The total number of packets is divided by
+    the time the video stream exists.
+  </summary>
+</histogram>
+
+<histogram name="WebRTC.Video.FirPacketsSentPerMinute" units="packets/minute">
+  <owner>asapersson@chromium.org</owner>
+  <summary>
+    The number of sent RTCP FIR packets per minute for a received video stream.
+    Recorded when a stream is removed. The total number of packets is divided by
+    the time the video stream exists.
+  </summary>
+</histogram>
+
+<histogram name="WebRTC.Video.KeyFramesReceivedInPermille" units="permille">
+  <owner>asapersson@chromium.org</owner>
+  <summary>
+    Permille of frames that are key frames for a received video stream. Recorded
+    when a stream is removed.
+  </summary>
+</histogram>
+
+<histogram name="WebRTC.Video.KeyFramesSentInPermille" units="permille">
+  <owner>asapersson@chromium.org</owner>
+  <summary>
+    Permille of frames that are key frames for a sent video stream. Recorded
+    when a stream is removed.
+  </summary>
+</histogram>
+
+<histogram name="WebRTC.Video.NackPacketsReceivedPerMinute"
+    units="packets/minute">
+  <owner>asapersson@chromium.org</owner>
+  <summary>
+    The number of received RTCP NACK packets per minute for a sent video stream.
+    Recorded when a stream is removed. The total number of packets is divided by
+    the time the video stream exists.
+  </summary>
+</histogram>
+
+<histogram name="WebRTC.Video.NackPacketsSentPerMinute" units="packets/minute">
+  <owner>asapersson@chromium.org</owner>
+  <summary>
+    The number of sent RTCP NACK packets per minute for a received video stream.
+    Recorded when a stream is removed. The total number of packets is divided by
+    the time the video stream exists.
+  </summary>
+</histogram>
+
+<histogram name="WebRTC.Video.PliPacketsReceivedPerMinute"
+    units="packets/minute">
+  <owner>asapersson@chromium.org</owner>
+  <summary>
+    The number of received RTCP PLI packets per minute for a sent video stream.
+    Recorded when a stream is removed. The total number of packets is divided by
+    the time the video stream exists.
+  </summary>
+</histogram>
+
+<histogram name="WebRTC.Video.PliPacketsSentPerMinute" units="packets/minute">
+  <owner>asapersson@chromium.org</owner>
+  <summary>
+    The number of sent RTCP PLI packets per minute for a received video stream.
+    Recorded when a stream is removed. The total number of packets is divided by
+    the time the video stream exists.
+  </summary>
+</histogram>
+
+<histogram name="WebRTC.Video.UniqueNackRequestsReceivedInPercent" units="%">
+  <owner>asapersson@chromium.org</owner>
+  <summary>
+    Percentage of unique RTCP NACK requests that are received in response to a
+    sent video stream. Recorded when a stream is removed.
+  </summary>
+</histogram>
+
+<histogram name="WebRTC.Video.UniqueNackRequestsSentInPercent" units="%">
+  <owner>asapersson@chromium.org</owner>
+  <summary>
+    Percentage of unique RTCP NACK requests that are sent in response to a
+    received video stream. Recorded when a stream is removed.
+  </summary>
+</histogram>
+
 <histogram name="WebRTC.webkitApiCount" enum="JavaScriptAPIName">
   <owner>perkj@chromium.org</owner>
   <summary>Counts number of calls to WebRTC APIs from JavaScript.</summary>