arc: Handle metrics for Auth operations.

components/arc/common/auth.mojom

 // 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.
 
-// Next MinVersion: 7
+// Next MinVersion: 8
 
 module arc.mojom;
 
 // These values describe failure reason of sign-in.
 [Extensible]
 enum ArcSignInFailureReason {
   // Negative values are reserved for internal use.
   // The values are shuffled to keep the backward compatibility and don't match
   // ProvisioningResult in arc_optin_uma.h
   // Next value: 15.
@@ skipping 56 matching lines @@
   // Chrome login account type is a user account.
   USER_ACCOUNT = 1,
 
   // Chrome login account type is a robot (service) account.
   ROBOT_ACCOUNT = 2,
 
   // Chrome login account type is an Active Directory account.
   ACTIVE_DIRECTORY_ACCOUNT = 3,
 };
 
+// These values describe the type of the metrics to report.
+[Extensible]
+enum MetricsType {
+  // Duration of waiting for network connection in milliseconds.
+  NETWORK_WAITING_TIME_MILLISECONDS = 0,
+
+  // Number of attempts to wait for Checkin task completed. 0 indicates that
+  // Checkin task was already completed prior to GMS SignIn.
+  CHECKIN_ATTEMPTS = 1,
+
+  // Duration of waiting for Checkin task completed in milliseconds.
+  CHECKIN_TIME_MILLISECONDS = 2,
+
+  // Duration of waiting for sign-in completed in milliseconds.
+  SIGNIN_TIME_MILLISECONDS = 3,
+};
+
 // The necessary information for Android to sign in and provision itself.
 struct AccountInfo {
   // The authorization code that can be used in Android to sign in when
   // account_type is USER_ACCOUNT or ROBOT_ACCOUNT. If it is null in these
   // cases, sign-in will be skipped.
   string? auth_code@0;
 
   // If account_type is ACTIVE_DIRECTORY_ACCOUNT, this contains an enrollment
   // token for a Managed Google Play account. If it is null in this case,
   // sign-in will be skipped.
   [MinVersion=6] string? enrollment_token@3;
 
   // The type of Chrome account to provision.
   ChromeAccountType account_type@1;
 
   // Whether the account is managed from Chrome OS.
   bool is_managed@2;
 };
 
-// Next Method ID: 7.
+// Next Method ID: 9.
 interface AuthHost {
   // Notifies Chrome that the sign-in is completed successfully.
   [MinVersion=2] OnSignInComplete@2();
   // Notifies Chrome that the sign-in fails to complete and provides failure
   // reason.
   [MinVersion=2] OnSignInFailed@3(ArcSignInFailureReason reason);
   // Asynchronously requests an authorization code, as well as the account
   // information.
   [MinVersion=5] RequestAccountInfo@7();
 
+  // Reports metrics to Chrome to be recorded in UMA.
+  [MinVersion=7] ReportMetrics@8(MetricsType metrics_type, int32 value);
+
   // Deprecated methods:
 
   // Returns an authorization code, which can be used to sign in.
   GetAuthCodeDeprecated0@0() => (string auth_code);
   // Returns an authorization code in case is_enforced is set, which can be
   // used to sign in. By default the ChromeAccountType is USER_ACCOUNT.
   [MinVersion=1] GetAuthCodeDeprecated@1() => (string auth_code,
                                                bool is_enforced);
   // Returns an authorization code and its ChromeAccountType in case
   // is_enforced is set, which can be used to sign in.
   [MinVersion=4] GetAuthCodeAndAccountTypeDeprecated@5() => (
           string auth_code, bool is_enforced, ChromeAccountType account_type);
   // Gets whether the account is managed from Chrome OS.
   [MinVersion=3] GetIsAccountManagedDeprecated@4() => (bool is_managed);
 };
 
 // Next Method ID: 2
 interface AuthInstance {
   // Establishes full-duplex communication with the host.
   Init@0(AuthHost host_ptr);
 
   // Callback from RequestAccountInfo. This cannot be a normal callback since
   // the result can sometimes take a few minutes in some cases (Kiosk mode),
   // and in other cases there is a UI that the user is shown and they can take
   // an arbitrarily long amount of time to interact with.
   // If |account_info| is null, it implies that there was an error in the
   // process.
   [MinVersion=5] OnAccountInfoReady(AccountInfo? account_info);
 };