Implement SmartText selection.

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">
+    <item
+        android:id="@+id/select_action_menu_assist"
+        android:title="@null"
+        android:showAsAction="always|withText"
+        android:orderInCategory="1"

[Ted C, 2017/03/29 17:43:50]

from the earlier comment, do we still need the orderInCategory?  It said you
could use visibility but did that not end up working?

[Tima Vaisburd, 2017/03/29 22:56:37]

Yes, after Android requested to use a particular ID which had to be retrieved on
run time (it belongs to Android O) I had to restore the ordering.

+        />
    <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"
         />
     <item
         android:id="@+id/select_action_menu_copy"
         android:icon="?android:attr/actionModeCopyDrawable"
         android:title="@android:string/copy"
         android:showAsAction="always|withText"
         android:alphabeticShortcut="c"
+        android:orderInCategory="3"
         />
     <item
         android:id="@+id/select_action_menu_paste"
         android:icon="?android:attr/actionModePasteDrawable"
         android:title="@android:string/paste"
         android:showAsAction="always|withText"
         android:alphabeticShortcut="v"
+        android:orderInCategory="4"
         />
     <item
         android:id="@+id/select_action_menu_share"
         android:title="@string/actionbar_share"
         android:showAsAction="always|withText"
         style="@style/SelectActionMenuShare"
+        android:orderInCategory="5"
         />
     <item
         android:id="@+id/select_action_menu_select_all"
         android:icon="?android:attr/actionModeSelectAllDrawable"
         android:title="@android:string/selectAll"
         android:showAsAction="always|withText"
         android:alphabeticShortcut="a"
+        android:orderInCategory="6"
         />
-    <group
-        android:id="@+id/select_action_menu_text_processing_menus">
-    </group>
     <item
         android:id="@+id/select_action_menu_web_search"
         android:title="@string/actionbar_web_search"
         android:showAsAction="always|withText"
         style="@style/SelectActionMenuWebSearch"
+        android:orderInCategory="7"
         />
+    <group
+        android:id="@+id/select_action_menu_text_processing_menus"
+        android:orderInCategory="8">
+    </group>
 </menu>