chrome/android/java/res/anim/menu_enter.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2014 The Chromium Authors. All rights reserved.
     Use of this source code is governed by a BSD-style license that can be
     found in the LICENSE file.
-->

<set xmlns:android="http://schemas.android.com/apk/res/android" android:shareInterpolator="false">
    <scale android:interpolator="@interpolator/transform_curve_interpolator"
        android:fromXScale="0"
        android:toXScale="1"
        android:fromYScale="0"
        android:toYScale="1"
        android:pivotX="@fraction/menu_animation_pivot_x"
        android:pivotY="5%"
        android:duration="200" />
    <alpha android:interpolator="@android:anim/linear_interpolator"
        android:fromAlpha="0" android:toAlpha="1"
        android:duration="200" />
</set>