Add a user action for stop in Android.

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. A user action should be tied to an actual
 action taken by a user. It should be logged immediately after a user takes the
@@ skipping 9351 matching lines @@
   <description>User pressed 'Print' in the app menu.</description>
 </action>
 
 <action name="MobileMenuQuit">
   <owner>aurimas@chromium.org</owner>
   <description>User pressed 'Quit' in the app menu.</description>
   <obsolete>This menu item was never added to the app menu.</obsolete>
 </action>
 
 <action name="MobileMenuReload">
-  <owner>aurimas@chromium.org</owner>
-  <description>User pressed 'Reload' in the app menu.</description>
-  <obsolete>This menu item was never added to the app menu.</obsolete>
+  <owner>tedchoc@chromium.org</owner>
+  <description>
+    User pressed the reload option in the app menu.  This was added in M55.
+    Prior to M55, the menu reload counts were combined with the toolbar counts,
+    which were all reported as MobileToolbarReload.
+  </description>
 </action>
 
 <action name="MobileMenuRequestDesktopSite">
   <owner>aurimas@chromium.org</owner>
   <description>
     User pressed 'Request Desktop Site' in the app menu.
   </description>
 </action>
 
 <action name="MobileMenuSettings">
   <owner>aurimas@chromium.org</owner>
   <description>User pressed 'Settings' in the app menu.</description>
 </action>
 
 <action name="MobileMenuShare">
   <owner>aurimas@chromium.org</owner>
   <description>User pressed 'Share' in the app menu.</description>
 </action>
 
 <action name="MobileMenuShow">
   <owner>aurimas@chromium.org</owner>
   <description>User opened the app menu.</description>
 </action>
 
+<action name="MobileMenuStop">
+  <owner>tedchoc@chromium.org</owner>
+  <description>User pressed the stop option in the app menu.</description>
+</action>
+
 <action name="MobileNTP.Interests.Click">
   <owner>knn@chromium.org</owner>
   <description>
     Android: The user clicked on an Interest item shown on the NTP.
   </description>
 </action>
 
 <action name="MobileNTP.Interests.Dismissed">
   <owner>knn@chromium.org</owner>
   <description>
@@ skipping 355 matching lines @@
   <description>Please enter the description of this user action.</description>
 </action>
 
 <action name="MobileToolbarNewTab">
   <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>Deprecated as of 5/2015</obsolete>
 </action>
 
 <action name="MobileToolbarReload">
-  <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>tedchoc@chromium.org</owner>
+  <description>
+    User pressed the reload icon in the toolbar.  Prior to M55, this metric
+    included all reload actions that happened either from the toolbar (tablets)
+    or from the menu (phones).  From M55 going forward, this only includes
+    reload actions from the toolbar.  Pre-M55, this was the same as
+    MobileToolbarReload summed with MobileMenuReload.

[Mark P, 2016/09/16 22:00:21]

the same as MobileToolbarReload
->
the same as what MobileToolbarReload should've been

[Ted C, 2016/09/16 23:40:37]

Color me quite confused.  Is this what you are asking?

Old:
Pre-M55, this was the same as MobileToolbarReload summed with MobileMenuReload.

New:
Pre-M55, this was the same as what MobileToolbarReload should've been summed
with MobileMenuReload.

I really have no idea what "should have been" actually means here, or what it
clarifies (I'm actually more confused by the sentence with that wording).  I'm
trying to provide a means of comparison:

Pre-M55, MobileToolbarReload accounted for all reload actions.  M55+, this
metric only refers to reloads that occurred from the toolbar.

Or even simpler:
Pre-M55, All Reloads = MobileToolbarReload
M55+,    All Reloads = MobileToolbarReload + MobileMenuReload

I could also drop the last sentence, as the "Prior to M55" sentence lets the
reader know that something is different, but I was trying to provide clarity
around the metric names which simply might not be necessary.

[Mark P, 2016/09/19 18:07:35]

Yes, indeed.

I thought the last sentence was confusing.  This is the action description for
MobileToolbarReload.  The last sentence reads: "Pre-M55, this was the same as
MobileToolbarReload summed with MobileMenuReload."

I had a suggestion on how to clarify it.  Apparently my suggestion didn't help.
:-(
Of your three alternate suggestions for clarity, on further rereading I prefer
the third--remove the last sentence altogether.

The also-acceptable runner-up for me is to replace the last three sentences with
your first suggestion: "Pre-M55, MobileToolbarReload accounted for all reload
actions.  M55+, this metric only refers to reloads that occurred from the
toolbar."

+  </description>
 </action>
 
 <action name="MobileToolbarShowMenu">
   <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="MobileToolbarShowStackView">
   <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="MobileToolbarStackViewNewTab">
   <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="MobileToolbarStop">
+  <owner>tedchoc@chromium.org</owner>
+  <description>User pressed the stop icon in the toolbar.</description>
+</action>
+
 <action name="MobileToolbarToggleBookmark">
   <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="MobileUsingMenuByHwButtonDragging">
   <owner>kkimlabs@chromium.org</owner>
   <description>
     Only for Android. Menu is shown by dragging from hardware menu button.
   </description>
@@ skipping 5927 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>