chromium/chrome/android/java/res/layout/url_bar.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright 2016 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.chrome.browser.omnibox.UrlBarApi26
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/url_bar"
    android:background="@null"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center_vertical"
    android:singleLine="true"
    android:imeOptions="actionGo|flagNoExtractUi|flagNoFullscreen"
    android:textAppearance="@style/TextAppearance.SearchBoxText"
    android:hint="@string/omnibox_empty_hint"
    android:importantForAutofill="no" />