[Background Sync] Gather UMA data for Background Sync

content/browser/background_sync/background_sync_metrics.cc

+// 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.
+
+#include "content/browser/background_sync/background_sync_metrics.h"
+
+#include "base/metrics/histogram_macros.h"
+#include "base/metrics/user_metrics_action.h"
+
+namespace content {
+
+void BackgroundSyncMetrics::RecordEventResult(SyncPeriodicity periodicity,
+                                              bool result) {
+  switch (periodicity) {
+    case SYNC_ONE_SHOT:
+      UMA_HISTOGRAM_BOOLEAN("BackgroundSync.Event.OneShotResult", result);
+      return;
+    case SYNC_PERIODIC:
+      UMA_HISTOGRAM_BOOLEAN("BackgroundSync.Event.PeriodicResult", result);
+      return;
+  }
+  NOTREACHED();
+}
+
+void BackgroundSyncMetrics::RecordSyncEventHandlingTime(
+    const base::TimeDelta& time) {
+  UMA_HISTOGRAM_MEDIUM_TIMES("BackgroundSync.Event.Time", time);

[jkarlin, 2015/07/13 16:51:13]

MEDIUM_TIMES goes from 10ms to 3 minutes. We should range from 10ms to 6 minutes
(with 5 being the max we should be able to reach).

[iclelland, 2015/07/13 19:34:31]

Thanks -- I meant go back to check that.
Done.

+}
+
+void BackgroundSyncMetrics::CountRegistration(SyncPeriodicity periodicity,
+                                              bool could_fire,
+                                              RegistrationResult result) {
+  switch (periodicity) {
+    case SYNC_ONE_SHOT:
+      UMA_HISTOGRAM_ENUMERATION("BackgroundSync.Registration.OneShot", result,
+                                NUM_REGISTRATION_RESULT_TYPES);
+      UMA_HISTOGRAM_BOOLEAN("BackgroundSync.Registration.OneShot.CouldFire",
+                            could_fire);
+      return;
+    case SYNC_PERIODIC:
+      UMA_HISTOGRAM_ENUMERATION("BackgroundSync.Registration.Periodic", result,
+                                NUM_REGISTRATION_RESULT_TYPES);
+      UMA_HISTOGRAM_BOOLEAN("BackgroundSync.Registration.Periodic.CouldFire",
+                            could_fire);
+      return;
+  }
+  NOTREACHED();
+}
+
+void BackgroundSyncMetrics::CountUnregistration(SyncPeriodicity periodicity,
+                                                bool success) {
+  switch (periodicity) {
+    case SYNC_ONE_SHOT:
+      UMA_HISTOGRAM_BOOLEAN("BackgroundSync.Unregistration.OneShot", success);
+      return;
+    case SYNC_PERIODIC:
+      UMA_HISTOGRAM_BOOLEAN("BackgroundSync.Unregistration.Periodic", success);
+      return;
+  }
+  NOTREACHED();
+}
+
+}  // namespace content