Add metrics for search engine promo and search widget

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 14436 matching lines @@
 <action name="SearchAnswer_StoppedLoading">
   <owner>vadimt@chromium.org</owner>
   <description>Answer card successfully loads.</description>
 </action>
 
 <action name="SearchAnswer_UserInteraction">
   <owner>vadimt@chromium.org</owner>
   <description>User interacts with an answer card.</description>
 </action>
 
+<action name="SearchEnginePromo.ExistingDevices.PromoSelected">
+  <owner>yusufo@chromium.org</owner>
+  <description>
+    The user has made a selection in the search engine promo in an existing
+    device that is setup before the promo was first introduced. This is a dialog
+    prompting the user to pick a default search engine.
+  </description>
+</action>
+
+<action name="SearchEnginePromo.NewDevices.PromoSelected">
+  <owner>yusufo@chromium.org</owner>
+  <description>
+    The user has made a selection in the search engine promo in a new device
+    that is setup after the promo was introduced. This is a dialog prompting the
+    user to pick a default search engine.
+  </description>
+</action>
+
 <action name="SearchEngine_ManualChange">
   <owner>ianwen@chromium.org</owner>
   <description>
     Recorded when the user has manually switched default search engine, which
     disables search engine auto switch feature in special locale. This is
     recorded on Android for every locale, but is currently only meaningful for
     studying special locales.
   </description>
 </action>
 
+<action name="SearchWidget.SearchMade">
+  <owner>yusufo@chromium.org</owner>
+  <description>
+    The user made a search from the Android search widget.
+  </description>
+</action>
+
+<action name="SearchWidget.WidgetSelected">
+  <owner>yusufo@chromium.org</owner>
+  <description>
+    The user launched the Android search widget from home screen.
+  </description>
+</action>
+
 <action name="SearchWithRLZ">
   <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="SearchWithoutRLZ">
   <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 2759 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>