gecko/mobile/android/base/resources/layout/gecko_app.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- This Source Code Form is subject to the terms of the Mozilla Public
   - License, v. 2.0. If a copy of the MPL was not distributed with this
   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent">

   <org.mozilla.gecko.TabsPanel android:id="@+id/tabs_panel"
                                android:layout_width="fill_parent"
                                android:layout_height="fill_parent"
                                android:background="@drawable/tabs_tray_bg_repeat"/>

   <LinearLayout android:id="@+id/main_layout"
                 style="@style/Screen.Transparent">
 
        <!-- BrowserToolbar will be added dynamically -->

        <RelativeLayout android:id="@+id/gecko_layout"
                        android:layout_width="fill_parent"
                        android:layout_height="fill_parent"
                        android:layout_weight="1">

            <AbsoluteLayout android:id="@+id/plugin_container"
                            android:background="@android:color/transparent"
                            android:layout_width="fill_parent"
                            android:layout_height="fill_parent"/>

            <org.mozilla.gecko.FormAssistPopup android:id="@+id/form_assist_popup"
                                               android:layout_width="fill_parent"
                                               android:layout_height="fill_parent"
                                               android:visibility="gone"/>

            <org.mozilla.gecko.AboutHomeContent android:id="@+id/abouthome_content"
                                                android:layout_width="fill_parent"
                                                android:layout_height="fill_parent"
                                                android:background="@drawable/abouthome_bg_repeat"/>

        </RelativeLayout>

        <org.mozilla.gecko.FindInPageBar android:id="@+id/find_in_page"
                                         android:layout_width="fill_parent"
                                         android:layout_height="wrap_content"
                                         android:layout_gravity="bottom"
                                         style="@style/FindBar"
                                         android:visibility="gone"/>

    </LinearLayout>

</RelativeLayout>