Record UMA for total data usage consumed by Chromium

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 1d90a810a1337e69020f1f20dd187afe12874660..4cb822f7ed82faef56eb7bff20e9a420fede3741 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -8543,6 +8543,16 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="DataUse.BytesReceived" units="bytes">
+  <owner>tbansal@chromium.org</owner>
+  <summary>Count of total bytes received by the Chrome on the network.</summary>
+</histogram>
+
+<histogram name="DataUse.BytesSent" units="bytes">
+  <owner>tbansal@chromium.org</owner>
+  <summary>Count of total bytes sent by the Chrome on the network.</summary>
+</histogram>
+
 <histogram name="DataUse.MessageSize" units="bytes">
   <owner>amohammadkhan@chromium.org</owner>
   <owner>bengr@chromium.org</owner>
@@ -101315,6 +101325,13 @@ To add a new entry, add it with any value and run test to compute valid value.
   <affected-histogram name="DataUsage.ReportSubmission.Bytes"/>
 </histogram_suffixes>
 
+<histogram_suffixes name="DataUse.Bytes" separator=".">
+  <suffix name="Delegate" label="As reported by the network delegate."/>
+  <suffix name="OS" label="As reported by the operating system."/>

[gayane -on leave until 09-2017, 2016/09/21 19:41:20]

This suffix seems to be used only for Android, should it me mentioned in the
description ?

[tbansal1, 2016/09/22 17:59:22]

Done.

+  <affected-histogram name="DataUse.BytesReceived"/>
+  <affected-histogram name="DataUse.BytesSent"/>
+</histogram_suffixes>
+
 <histogram_suffixes name="DataUse.Dimensions" separator=".">
   <suffix name="Upstream.Background.NotCellular"/>
   <suffix name="Upstream.Background.Cellular"/>