Support needed to measure user and service traffic in Chrome.

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 ab7289663c8bd358271c1fab318dd23364b30a2f..49d8b1bd9aa712e45194a1b3a98d720eafbe5932 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -5212,6 +5212,40 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
   </summary>
 </histogram>
 
+<histogram name="DataUse.NotUser" units="bytes">
+  <owner>amohammadkhan@chromium.org</owner>
+  <owner>bengr@chromium.org</owner>
+  <summary>
+    The total data use of Chrome's services. This traffic is not requested by
+    Renderer process.
+  </summary>
+</histogram>
+
+<histogram name="DataUse.Service" units="bytes">
+  <owner>amohammadkhan@chromium.org</owner>
+  <owner>bengr@chromium.org</owner>
+  <summary>
+    The request and reponse size of the messages exchanged by a service.
+  </summary>
+</histogram>
+
+<histogram name="DataUse.Services" enum="DataUseServices">
+  <owner>amohammadkhan@chromium.org</owner>
+  <owner>bengr@chromium.org</owner>
+  <summary>
+    The request and reponse size of the messages exchanged by a service.
+  </summary>
+</histogram>
+
+<histogram name="DataUse.User" units="bytes">
+  <owner>amohammadkhan@chromium.org</owner>
+  <owner>bengr@chromium.org</owner>
+  <summary>
+    The total amount of data use of Chrome for user traffic. This traffic is
+    requested by Renderer process.
+  </summary>
+</histogram>
+
 <histogram name="DefaultBrowser.InteractionResult"
     enum="MakeChromeDefaultResult">
   <owner>gab@chromium.org</owner>
@@ -53511,6 +53545,10 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries.
       label="Arrived at settings menu by another path: entered on, exited on"/>
 </enum>
 
+<enum name="DataUseServices" type="int">
+  <int value="700836285" label="Suggestion Service"/>

[sclittle, 2015/08/21 23:55:34]

Please don't use a hash as an enum value.

[amohammadkhan, 2015/08/24 23:18:48]

Done.

+</enum>
+
 <enum name="DecodedImageType" type="int">
   <int value="0" label="kImageUnknown"/>
   <int value="1" label="kImageJPEG"/>
@@ -72339,6 +72377,25 @@ To add a new entry, add it with any value and run test to compute valid value.
       name="DataReductionProxy.RequestCompletionErrorCodes.MainFrame"/>
 </histogram_suffixes>
 
+<histogram_suffixes name="DataUse.Dimensions" separator=".">
+  <suffix name="Upload.Background.NotCellular"/>
+  <suffix name="Upload.Background.Cellular"/>
+  <suffix name="Upload.Foreground.NotCellular"/>
+  <suffix name="Upload.Foreground.Cellular"/>
+  <suffix name="Download.Background.NotCellular"/>
+  <suffix name="Download.Background.Cellular"/>
+  <suffix name="Download.Foreground.NotCellular"/>
+  <suffix name="Download.Foreground.Cellular"/>
+  <affected-histogram name="DataUse.NotUser"/>
+  <affected-histogram name="DataUse.Services"/>
+  <affected-histogram name="DataUse.User"/>
+</histogram_suffixes>
+
+<histogram_suffixes name="DataUse.Service.Types" separator=".">
+  <suffix name="Suggestion"/>
+  <affected-histogram name="DataUse.Service"/>
+</histogram_suffixes>
+
 <histogram_suffixes name="DefaultAppsExperiment">
   <suffix name="NoDefaultApps" label="User's without default apps installed"/>
   <suffix name="WithDefaultApps" label="User's with default apps installed"/>