Report video and network stats averaged over 1s, and create corresponding UMA metrics.

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 554a46cdec308c9a7986652b310f2c127c4091fd..8d771358c75de38f1f41da96987daee500395215 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -3441,6 +3441,30 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="Chromoting.Video.Bandwidth" units="Bytes/second">
+  <owner>anandc@chromium.org</owner>

[Wez, 2015/07/14 20:24:17]

What does it mean to "own" a histogram? Should we add e.g. Joe here as well?

[anandc, 2015/07/15 03:59:55]

I'm not entirely sure. asvitkine@/rkaplow@, could you explain?

I've added sergeyu@ for now as owner.

[Alexei Svitkine (slow), 2015/07/16 20:58:22]

Sorry, missed this one. It basically means that if someone has a question about
this histogram - that you're the right person to ask. (And establishes that this
histogram is something that is being used - e.g. as opposed to some legacy
histograms we have that don't have an owner.)

+  <summary>
+    The bandwidth of non-empty packets in Chromoting remote sessions, updated
+    every time a video packet is processed and logged every 1s.
+  </summary>
+</histogram>
+
+<histogram name="Chromoting.Video.FrameRate" units="fps">
+  <owner>anandc@chromium.org</owner>
+  <summary>
+    The frame-rate of non-empty packets in Chromoting remote sessions, updated
+    every time a video packet is processed and logged every 1s.
+  </summary>
+</histogram>
+
+<histogram name="Chromoting.Video.PacketRate" units="packets/second">
+  <owner>anandc@chromium.org</owner>
+  <summary>
+    The packets/sec, including empty packets, in Chromoting remote sessions,
+    updated every time a video packet is processed and logged every 1s.
+  </summary>
+</histogram>
+
 <histogram name="clickjacking.discard_download" units="ms">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>