Add popup layout for theme of gingerbread

<?xml version="1.0" encoding="utf-8"?>

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     Licensed under the Apache License, Version 2.0 (the "License");

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<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_pressed="true"

          android:drawable="@drawable/btn_keyboard_key_light_popup_selected" />

    <item android:drawable="@drawable/btn_keyboard_key_light_popup_normal" />

</selector>

        android:textStyle="bold"

        latin:keyBackground="@drawable/btn_keyboard_key_gingerbread"

        latin:popupLayout="@layout/input_gingerbread_popup"

        latin:keyTextStyle="bold"

        />

            android:layout_height="wrap_content"

            android:background="@drawable/keyboard_dark_background"

            latin:keyBackground="@drawable/btn_keyboard_key_gingerbread"

            latin:keyBackground="@drawable/btn_keyboard_key_gingerbread_popup"

            latin:popupLayout="@layout/input_gingerbread_popup"

        />

</LinearLayout>