chromium/android_webview/tools/system_webview_shell/apk/res/layout/activity_webview_animation_test.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2019 The Chromium Authors
     Use of this source code is governed by a BSD-style license that can be
     found in the LICENSE file.
-->

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <Button
            android:id="@+id/translate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/translate_button" />
        <Button
            android:id="@+id/scale"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/scale_button" />
        <Button
            android:id="@+id/rotate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/rotate_button" />
        <CheckBox
            android:id="@+id/use_layer"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:checked="false"
            android:text="@string/layer_button" />
    </LinearLayout>
    <CheckBox
        android:id="@+id/use_stencil"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:checked="false"
        android:text="@string/stencil_button" />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/alpha_button"
            android:layout_gravity="center_vertical" />
        <SeekBar
            android:id="@+id/view_alpha"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:max="100"
            android:progress="100"
            android:layout_marginStart="4dp"
            android:layout_marginEnd="8dp" />
    </LinearLayout>
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="0dip"
        android:layout_weight="1">
        <org.chromium.webview_shell.WebViewWithClipPath
            android:id="@+id/webview"
            android:layout_width="300dp"
            android:layout_height="300dp"
            android:layout_gravity="center" />
    </FrameLayout>
</LinearLayout>