Add use counters for persistent notification interaction.

chrome/browser/notifications/platform_notification_service_impl.cc

Index: chrome/browser/notifications/platform_notification_service_impl.cc
diff --git a/chrome/browser/notifications/platform_notification_service_impl.cc b/chrome/browser/notifications/platform_notification_service_impl.cc
index 560fa06a4895842b35789cd800836a542d8ee8fb..4f93a577edf32655f8a4ff286953253107f73e21 100644
--- a/chrome/browser/notifications/platform_notification_service_impl.cc
+++ b/chrome/browser/notifications/platform_notification_service_impl.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/notifications/platform_notification_service_impl.h"
 
 #include "base/metrics/histogram_macros.h"
+#include "base/metrics/user_metrics_action.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
@@ -23,6 +24,7 @@
 #include "content/public/browser/notification_event_dispatcher.h"
 #include "content/public/browser/platform_notification_context.h"
 #include "content/public/browser/storage_partition.h"
+#include "content/public/browser/user_metrics.h"
 #include "content/public/common/platform_notification_data.h"
 #include "ui/message_center/notifier_settings.h"
 #include "url/url_constants.h"
@@ -88,6 +90,9 @@ void PlatformNotificationServiceImpl::OnPersistentNotificationClick(
     const GURL& origin,
     int action_index) const {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  content::RecordAction(
+      base::UserMetricsAction("Notifications.Persistent.Clicked"));
+
   content::NotificationEventDispatcher::GetInstance()
       ->DispatchNotificationClickEvent(
             browser_context,
@@ -102,6 +107,9 @@ void PlatformNotificationServiceImpl::OnPersistentNotificationClose(
     int64_t persistent_notification_id,
     const GURL& origin) const {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  content::RecordAction(
+      base::UserMetricsAction("Notifications.Persistent.Closed"));
+
   PlatformNotificationContext* context =
       BrowserContext::GetStoragePartitionForSite(browser_context, origin)
           ->GetPlatformNotificationContext();
@@ -262,6 +270,8 @@ void PlatformNotificationServiceImpl::DisplayPersistentNotification(
   persistent_notifications_[persistent_notification_id] = notification.id();
 
   GetNotificationUIManager()->Add(notification, profile);
+  content::RecordAction(
+      base::UserMetricsAction("Notifications.Persistent.Shown"));
 
   profile->GetHostContentSettingsMap()->UpdateLastUsage(
       origin, origin, CONTENT_SETTINGS_TYPE_NOTIFICATIONS);