session-android/res/menu/conversation_insecure.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:title="Security"
          android:id="@+id/menu_security"
          android:icon="@drawable/ic_menu_lock_holo_dark"
          android:showAsAction="ifRoom">
          <menu>
              <item android:title="@string/conversation_insecure__menu_start_secure_session"
                    android:id="@+id/menu_start_secure_session" />

          </menu>
    </item>
</menu>