Implement cloud policy invalidations using the invalidation service framework.

chrome/browser/policy/cloud/enterprise_metrics.h

Index: chrome/browser/policy/cloud/enterprise_metrics.h
diff --git a/chrome/browser/policy/cloud/enterprise_metrics.h b/chrome/browser/policy/cloud/enterprise_metrics.h
index 6d262e0a45a6f1f0f7b73c096636cd05713fa1f4..0e30532b647d4d1c338a3ef4b5ae6a1560e66c69 100644
--- a/chrome/browser/policy/cloud/enterprise_metrics.h
+++ b/chrome/browser/policy/cloud/enterprise_metrics.h
@@ -159,12 +159,45 @@ enum MetricEnrollment {
   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.
+  kMetricPolicyRefreshChanged,
+  // A refresh occurred while the policy was not invalidated and the policy was
+  // changed. Invalidations were disabled.
+  kMetricPolicyRefreshChangedNoInvalidations,
+  // A refresh occurred while the policy was not invalidated and the policy was
+  // unchanged.
+  kMetricPolicyRefreshUnchanged,
+  // A refresh occurred while the policy was invalidated and the policy was
+  // changed.
+  kMetricPolicyRefreshInvalidatedChanged,
+  // A refresh occurred while the policy was invalidated and the policy was
+  // unchanged.
+  kMetricPolicyRefreshInvalidatedUnchanged,
+
+  kMetricPolicyRefreshSize  // Must be the last.
+};
+
+// Events related to policy invalidations.
+enum MetricPolicyInvalidations {
+  // A invalidation with a payload was received.
+  kMetricPolicyInvalidationsPayload,
+  // A invalidation with no payload was received.
+  kMetricPolicyInvalidationsNoPayload,
+
+  kMetricPolicyInvalidationsSize  // 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.
 extern const char* kMetricToken;
 extern const char* kMetricPolicy;
 extern const char* kMetricEnrollment;
+extern const char* kMetricPolicyRefresh;
+extern const char* kMetricPolicyInvalidations;
 
 }  // namespace policy