Tweaks for: Toggle spoken feedback if two fingers are held down

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 978 matching lines @@
 <action name="AcceptedKeyword">
   <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="AcceptedKeywordHint">
   <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="Accessibility.TwoFingersHeldGeneratedSpokenFeedbackCountdown">
+  <owner>dmazzoni@chromium.org</owner>
+  <description>
+    Metric recorded on Chrome OS when the user holds down   two fingers on a

[Ilya Sherman, 2016/11/16 23:11:33]

nit: Please remove the extra spaces in this description, such as the ones
between "down" and "two"

[Ilya Sherman, 2016/11/22 22:33:08]

^^^

[dmazzoni, 2016/11/22 22:35:17]

Oops, done.

+    touch screen for more than the minimum number of   seconds to trigger a
+    countdown. If the user continues to hold down   two fingers through the
+    countdown it will toggle spoken feedback.   If spoken feedback is toggled,
+    the StatusArea_SpokenFeedbackEnabled or   StatusArea_SpokenFeedbackDisabled
+    actions will be recorded.
+  </description>
+</action>
+
 <action name="ActionBox.ClickButton">
   <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="ActionBox.FindShareHandlers">
   <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 14894 matching lines @@
 <action name="webapps.AddShortcut.Manifest">
   <owner>mlamouri@chromium.org</owner>
   <description>
     Shortcut added to the homescreen with a valid Manifest. This action will be
     recorded in addition to AppShortcut, AppShortcutApple and Bookmark actions
     to keep a trend of whether the webapp also add meta tags.
   </description>
 </action>
 
 </actions>