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

ash/public/interfaces/login_user_info.mojom

Index: ash/public/interfaces/login_user_info.mojom
diff --git a/ash/public/interfaces/login_user_info.mojom b/ash/public/interfaces/login_user_info.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..a044e7e35aeab9dd83ecc4d439565ae7e2d340ca
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+++ b/ash/public/interfaces/login_user_info.mojom
@@ -0,0 +1,65 @@
+// 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 "ash/public/interfaces/user_info.mojom";
+import "mojo/common/string16.mojom";
+
+// Supported authentication types. Keep in sync with enum in
+// screenlock_bridge.h
+enum AuthType {
+  OFFLINE_PASSWORD,
+  ONLINE_SIGN_IN,
+  NUMERIC_PIN,
+  USER_CLICK,
+  EXPAND_THEN_USER_CLICK,
+  FORCE_OFFLINE_PASSWORD,
+};
+
+// Supported multi-profile user behavior values.
+// Keep in sync with the enum in md_user_pod_row.js and user_pod_row.js
+enum MultiProfileUserBehavior {
+    UNRESTRICTED,

[jdufault, 2017/06/16 22:18:09]

Does mojo allow us to explicitly give values here, ie, = 0, = 1?

[xiyuan, 2017/06/16 23:05:41]

Yes.

See
https://chromium.googlesource.com/chromium/src/+/master/mojo/public/tools/bin...

[xiaoyinh(OOO Sep 11-29), 2017/06/19 17:29:50]

Done.

+    PRIMARY_ONLY,
+    NOT_ALLOWED,
+    OWNER_PRIMARY_ONLY,

[xiyuan, 2017/06/16 23:05:41]

nit: wrong indent

[xiaoyinh(OOO Sep 11-29), 2017/06/19 17:29:50]

Done.

+};
+
+// Information about the custom icon in the user pod.
+struct UserPodCustomIconOptions {
+  string id;
+  mojo.common.mojom.String16 tooltip;
+  bool autoshow_tooltip;
+  mojo.common.mojom.String16 aria_label;
+  bool hardlock_on_click;
+  bool is_trial_run;
+};
+
+// Info about a user in login/lock screen.
+struct LoginUserInfo {
+  // User's basic information including account id, email, avatar etc.
+  UserInfo basic_user_info;
+
+  // What method the user can use to sign in.
+  AuthType auth_type;
+
+  // True if this user has already signed in.
+  bool is_signed_in;
+
+  // True if this user is the device owner.
+  bool is_device_owner;
+
+  // True if fingerprint unlock is allowed for this user.
+  bool allow_fingerprint_unlock;
+
+  // True if multi-profiles sign in is allowed for this user.
+  bool is_multiprofile_allowed;
+
+  // Enforced policy for multi-profiles sign in.
+  MultiProfileUserBehavior multiprofile_policy;
+
+  // True if this user can be removed.
+  bool can_remove;
+};