packages/SystemUI/res/layout/status_bar_search_panel.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
/* apps/common/assets/default/default/skins/StatusBar.xml
**
** Copyright 2012, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
**     http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
-->

<!-- Extends FrameLayout -->
<com.android.systemui.SearchPanelView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/search_panel_container"
    android:layout_height="match_parent"
    android:layout_width="match_parent">

    <com.android.systemui.statusbar.AlphaOptimizedView
        style="@style/SearchPanelScrim"
        android:id="@+id/search_panel_scrim"
        android:background="@drawable/search_panel_scrim" />

    <com.android.systemui.SearchPanelCircleView
        style="@style/SearchPanelCircle"
        android:id="@+id/search_panel_circle">

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/search_logo" />
    </com.android.systemui.SearchPanelCircleView>

</com.android.systemui.SearchPanelView>