[SmartText selection] Restore separator between assist and other items

content/public/android/java/res/menu/select_action_menu.xml

 <?xml version="1.0" encoding="utf-8"?>
 
 <!-- Copyright 2013 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.
 -->
 
 <!--suppress AlwaysShowAction -->
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
-    <!-- The orderInCategory starts with 2 to give a room for
-         assist menu item. Remove the ordering when Android
-         can reorder the assist menu item itself.
-         -->
+    <!-- Remove the ordering when Android can reorder the assist menu item
+         itself. -->
+    <group
+        android:id="@+id/select_action_menu_assist_items"
+        android:orderInCategory="1">
+    </group>
     <group
         android:id="@+id/select_action_menu_default_items">
         <item
             android:id="@+id/select_action_menu_cut"
             android:icon="?android:attr/actionModeCutDrawable"
             android:title="@android:string/cut"
             android:showAsAction="always|withText"
             android:alphabeticShortcut="x"
             android:orderInCategory="2"
             />
@@ skipping 41 matching lines @@
             android:showAsAction="always|withText"
             style="@style/SelectActionMenuWebSearch"
             android:orderInCategory="8"
             />
     </group>
     <group
         android:id="@+id/select_action_menu_text_processing_menus"
         android:orderInCategory="9">
     </group>
 </menu>