Added UMA stats to overview mode

tools/metrics/actions/actions.xml

 <!--
 Copyright 2014 The Chromium Authors. All rights reserved.
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 -->
 
 <!--
 This file is a comprehensive list of Chrome user actions along with the owner
 and description for each user action.
 
@@ skipping 10952 matching lines @@
 <action name="Win8MetroRestart">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="WindowBorder_ClickTogglesSingleAxisMaximize">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
+<action name="WindowCycleController_Cycle">
+  <owner>tdanderson@chromium.org</owner>
+  <owner>flackr@chromium.org</owner>
+  <description>
+    Starting a window selection cycle by pressing alt-tab.
+  </description>
+</action>
+
 <action name="WindowDrag_MaximizeLeft">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="WindowDrag_MaximizeRight">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="WindowSelector_Overview">
-  <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
-  <description>Please enter the description of this user action.</description>
+  <owner>tdanderson@chromium.org</owner>
+  <owner>flackr@chromium.org</owner>
+  <description>Starting the window overview mode.</description>
+</action>
+
+<action name="WindowSelector_OverviewEnterKey">
+  <owner>tdanderson@chromium.org</owner>
+  <owner>flackr@chromium.org</owner>
+  <description>
+    Using the enter key to select a window in the overview.
+  </description>
 </action>
 
 <action name="WindowSelector_Selection">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
+  <obsolete>
+    No longer relevant since alt tab window switching was separated from
+    overview mode.

[Ilya Sherman, 2014/06/11 17:27:48]

nit: Please include the (rough) date on which this became obsolete.  Not sure if
there are great examples in this file, but there ought to be lots in
histograms.xml, which has been an XML file for longer.

+  </obsolete>
 </action>
 
 <action name="WorkerProcess_BadProcessToKill">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="ZoomMinus">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
@@ skipping 73 matching lines @@
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="webapps.AddShortcut.Bookmark">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of this user action.</description>
 </action>
 
 </actions>