chrome/android/java/res/layout/bottom_toolbar_tab_switcher.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2018 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. -->

<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/bottom_toolbar_tab_switcher"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:visibility="gone"
    android:clickable="true" >

    <ImageView
        android:id="@+id/bottom_toolbar_top_shadow"
        android:layout_width="match_parent"
        android:layout_height="@dimen/toolbar_shadow_height"
        android:src="@drawable/modern_toolbar_shadow"
        android:scaleType="fitXY"
        android:scaleY="-1"
        tools:ignore="ContentDescription" />

    <LinearLayout
        android:id="@+id/bottom_toolbar_buttons"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="@dimen/bottom_toolbar_height"
        android:background="@color/modern_primary_color"
        android:paddingStart="@dimen/bottom_toolbar_start_padding"
        android:paddingEnd="@dimen/bottom_toolbar_end_padding"
        android:layout_marginTop="@dimen/toolbar_shadow_height" >

      <org.chromium.chrome.browser.toolbar.bottom.CloseAllTabsButton
          android:id="@+id/close_all_tabs_button"
          style="@style/BottomToolbarButton"
          android:src="@drawable/ic_close_all_tabs"
          android:contentDescription="@string/menu_close_all_tabs"
          app:tint="@color/dark_mode_tint" />

      <include layout="@layout/toolbar_space" />

      <org.chromium.chrome.browser.toolbar.bottom.BottomToolbarNewTabButton
          android:id="@+id/tab_switcher_new_tab_button"
          android:layout_width="@dimen/search_accelerator_height"
          android:layout_height="@dimen/search_accelerator_height"
          android:layout_gravity="center"
          android:paddingTop="@dimen/search_accelerator_height_padding"
          android:paddingBottom="@dimen/search_accelerator_height_padding"
          android:contentDescription="@string/accessibility_toolbar_btn_new_tab" />

      <include layout="@layout/toolbar_space" />

      <include layout="@layout/menu_button" />

    </LinearLayout>

</FrameLayout>