Create Mojo Struct for user information used in login/lock screen.

components/proximity_auth/public/interfaces/auth_type.mojom

Index: components/proximity_auth/public/interfaces/auth_type.mojom
diff --git a/components/proximity_auth/public/interfaces/auth_type.mojom b/components/proximity_auth/public/interfaces/auth_type.mojom
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+// Copyright 2017 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.
+
+module proximity_auth.mojom;
+
+// Supported authentication types.
+enum AuthType {
+  // Password is used to authenticate.
+  OFFLINE_PASSWORD,
+
+  // Online authentication against GAIA.
+  ONLINE_SIGN_IN,
+
+  // Pin is used to authenticate.
+  NUMERIC_PIN,
+
+  // Click on the user pod to unlock/sign-in.
+  USER_CLICK,
+
+  // Used for public session. Click on the user pod would expand the pod and
+  // allow a click to sign-in.
+  EXPAND_THEN_USER_CLICK,
+
+  // Forced to use password to authenticate.
+  // Unlike OFFLINE_PASSWORD, this can't be changed to any other.
+  FORCE_OFFLINE_PASSWORD,
+};