Adds UMA for display color calibration in ChromeOS.

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 1988 matching lines @@
 <action name="CloseWindow">
   <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="CloseWindowByKey">
   <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="ColorProfileChanged">
+  <owner>xiaowenx@chromium.org</owner>
+  <owner>mukai@chromium.org</owner>
+  <description>Please enter the description of the metric.</description>

[Alexei Svitkine (slow), 2014/03/26 13:02:10]

This is missing a description.

Also, does it need to be an action rather than a histogram? (the difference is
that our dashboards have better support for histograms while actions havr timing
information internally which is only accessible through custom analysis scripts)

[Jun Mukai, 2014/03/26 18:08:09]

Added the description.

Correct me if I'm wrong, but I think histogram total count is the total number
of the users who change the color profile. My intention of this action is to see
how many times users change this, because a user may change it upon a specific
situation (to choose 'movie' profile when watching videos, for example). If
histogram doesn't work in that way, I'll remove this.

[Alexei Svitkine (slow), 2014/03/26 19:18:08]

The histogram dashboard has two views.

The default view shows counts (not users), so you'd see the number of changes
total. There's a checkbox called "show user counts" that instead shows the
number of unique users that reported each bucket.

[Jun Mukai, 2014/03/26 21:17:46]

ah, got it. removed. thanks!

+</action>
+
 <action name="ConfirmNotToOrderSpringCharger">
   <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="ConfirmOrderSpringCharger">
   <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>
 
@@ skipping 8562 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>