Add UMA stats for Chromoting connection details.

tools/metrics/actions/actions.xml

Index: tools/metrics/actions/actions.xml
diff --git a/tools/metrics/actions/actions.xml b/tools/metrics/actions/actions.xml
index 98de2e1e00c65f6d95aa9433b22494bffa103226..a2b1e50d6c626f0d9ca256f26442a93ab2b59868 100644
--- a/tools/metrics/actions/actions.xml
+++ b/tools/metrics/actions/actions.xml
@@ -2067,6 +2067,36 @@ should be able to be added at any place in this file.
   <description>Please enter the description of this user action.</description>
 </action>
 
+<action name="Chromoting.Connections.Authenticated">
+  <owner>anandc@chromium.org</owner>
+  <owner>sergeyu@chromium.org</owner>
+  <description>Count of Chromoting Authenticated events.</description>
+</action>
+
+<action name="Chromoting.Connections.Closed">
+  <owner>anandc@chromium.org</owner>
+  <owner>sergeyu@chromium.org</owner>
+  <description>Count of Chromoting Closed events.</description>
+</action>
+
+<action name="Chromoting.Connections.Connected">
+  <owner>anandc@chromium.org</owner>
+  <owner>sergeyu@chromium.org</owner>
+  <description>Count of Chromoting Connected events.</description>
+</action>
+
+<action name="Chromoting.Connections.Connecting">
+  <owner>anandc@chromium.org</owner>
+  <owner>sergeyu@chromium.org</owner>
+  <description>Count of Chromoting Connecting events.</description>
+</action>
+
+<action name="Chromoting.Connections.Dropped">
+  <owner>anandc@chromium.org</owner>
+  <owner>sergeyu@chromium.org</owner>
+  <description>Count of Chromoting Dropped events.</description>
+</action>

[Ilya Sherman, 2015/08/20 23:42:46]

These don't seem like user actions.  Have you considered using an enumerated
histogram instead?

[anandc, 2015/08/21 03:15:42]

While these are not user actions, they are events experienced by users, so went
with user-actions.

Would enumerated histograms allow us to do side-by-side comparisons? I notice
that on the UMA dashboard, only the sum is shown for enumerated histograms. See
https://uma.googleplex.com/p/chrome/histograms/?dayCount=7&endDate=08-19-2015...
for example.
We actually want to compare each of these metrics across versions.

+
 <action name="ClearAuthenticationCache">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>