Enrollment recovery: Add UMA stats.

components/policy/core/common/cloud/enterprise_metrics.h

 // Copyright (c) 2012 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.
 
 #ifndef COMPONENTS_POLICY_CORE_COMMON_CLOUD_ENTERPRISE_METRICS_H_
 #define COMPONENTS_POLICY_CORE_COMMON_CLOUD_ENTERPRISE_METRICS_H_
 
 #include "components/policy/policy_export.h"
 
 namespace policy {
@@ skipping 149 matching lines @@
   // Enrollment failed because the robot account auth code couldn't be
   // exchanged for a refresh token.
   kMetricEnrollmentRobotRefreshTokenFetchFailed,
   // Enrollment failed because the robot account refresh token couldn't be
   // persisted on the device.
   kMetricEnrollmentRobotRefreshTokenStoreFailed,
   // Enrollment failed because the administrator has deprovisioned the device.
   kMetricEnrollmentDeprovisioned,
   // Enrollment failed because the device doesn't belong to the domain.
   kMetricEnrollmentDomainMismatch,
+  // Enrollment has been triggered, the credential screen has been shown.
+  kMetricEnrollmentTriggered,
+  // The user retried to submitted credentials.
+  kMetricEnrollmentRetried,
 
   kMetricEnrollmentSize  // Must be the last.
 };
 
 // Events related to policy refresh.
 enum MetricPolicyRefresh {
   // A refresh occurred while the policy was not invalidated and the policy was
   // changed. Invalidations were enabled.
   METRIC_POLICY_REFRESH_CHANGED,
   // A refresh occurred while the policy was not invalidated and the policy was
@@ skipping 25 matching lines @@
 
   POLICY_INVALIDATION_TYPE_SIZE  // Must be the last.
 };
 
 // Names for the UMA counters. They are shared from here since the events
 // from the same enum above can be triggered in different files, and must use
 // the same UMA histogram name.
 POLICY_EXPORT extern const char kMetricToken[];
 POLICY_EXPORT extern const char kMetricPolicy[];
 POLICY_EXPORT extern const char kMetricEnrollment[];
+POLICY_EXPORT extern const char kMetricEnrollmentRecovery[];
 POLICY_EXPORT extern const char kMetricPolicyRefresh[];
 POLICY_EXPORT extern const char kMetricPolicyInvalidations[];
 
 }  // namespace policy
 
 #endif  // COMPONENTS_POLICY_CORE_COMMON_CLOUD_ENTERPRISE_METRICS_H_