chromium/tools/android/kerberos/SpnegoAuthenticator/res/xml/spnego_authenticator.xml

<?xml version="1.0" encoding="utf-8"?>
<account-authenticator xmlns:android="http://schemas.android.com/apk/res/android"
    android:accountType="@string/account_type"
    android:label="@string/app_name"
    android:icon="@mipmap/ic_launcher"
    android:smallIcon="@mipmap/ic_launcher"
    android:customTokens="true"
    android:accountPreferences="@xml/spnego_account_preferences"/>