cros: Pull user info from session_controller_client.mojom into separate mojom.

ash/public/interfaces/user_info.mojom

+// 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 ash.mojom;
+
+import "components/signin/public/interfaces/account_id.mojom";
+import "ui/gfx/image/mojo/image.mojom";
+
+// Matches user_manager::UserType.
+enum UserType {
+  // Regular user, has a user name and password.
+  REGULAR,
+
+  // Guest user, logs in without authentication.
+  GUEST,
+
+  // Public account user, logs in without authentication. Available only if
+  // enabled through policy.
+  PUBLIC_ACCOUNT,
+
+  // Supervised user, logs in only with local authentication.
+  SUPERVISED,
+
+  // Kiosk app robot, logs in without authentication.
+  KIOSK,
+
+  // Child user, with supervised options.
+  CHILD,
+
+  // Android app in kiosk mode, logs in without authentication.
+  ARC_KIOSK,
+
+  // Active Directory user. Authenticates against Active Directory server.
+  ACTIVE_DIRECTORY,
+};
+
+
+// Info about a user. May be sent repeatedly for a single user because
+// individual fields may change (e.g. the avatar image or custodians).
+struct UserInfo {
+  UserType type;
+  signin.mojom.AccountId account_id;
+  string display_name;
+  string display_email;
+  gfx.mojom.ImageSkia avatar;
+};