chrome/android/java/res_template/xml/syncadapter.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2015 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. -->

<!-- The attributes in this XML file provide configuration information -->
<!-- for the SyncAdapter. -->

<sync-adapter xmlns:android="http://schemas.android.com/apk/res/android"
    android:contentAuthority="{{manifest_package}}"
    android:accountType="com.google" />