chrome/android/java/res/layout/navigation_sheet_toolbar.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.
-->
<org.chromium.ui.widget.OptimizedFrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="8dp">
    <ImageView
        android:id="@+id/drag_handlebar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal|top"
        android:layout_marginTop="8dp"
        android:layout_centerHorizontal="true"
        android:importantForAccessibility="no"
        android:src="@drawable/drag_handlebar" />
</org.chromium.ui.widget.OptimizedFrameLayout>