Make Android Clipboard Keep Track of Last Modified Time

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 10024 matching lines @@
 </action>
 
 <action name="MobileNewTabOpened">
   <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="MobileOmniboxClipboardChanged">
   <owner>jif@chromium.org</owner>
   <description>
-    Emitted when Chrome detects that the clipboard contains a new URL. This
-    occurs either when Chrome enters the foreground and notices that the content
-    of the clipboard changed, or when the clipboard changes while Chrome is in
-    the foreground.
+    Emitted when Chrome detects that the clipboard contains a new URL.
+
+    On iOS: this occurs either when Chrome enters the foreground and notices
+    that the content of the clipboard changed, or when the clipboard changes
+    while Chrome is in the foreground.
+
+    On Android: this occurs when Chrome starts up or when the clipboard changes
+    while Chrome is running (in the foreground or not).
   </description>
 </action>
 
 <action name="MobileOmniboxDeleteGesture">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <description>Please enter the description of the metric.</description>
 </action>
 
 <action name="MobileOmniboxDeleteRequested">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
@@ skipping 6485 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>