Implement native web notifications for mac

chrome/browser/notifications/notification_ui_manager.h

Index: chrome/browser/notifications/notification_ui_manager.h
diff --git a/chrome/browser/notifications/notification_ui_manager.h b/chrome/browser/notifications/notification_ui_manager.h
index d86a9a578492f206dd9c001ae2b216d42643d76c..78148357ca00f795ee5e5c00205b58cc0778d1bf 100644
--- a/chrome/browser/notifications/notification_ui_manager.h
+++ b/chrome/browser/notifications/notification_ui_manager.h
@@ -45,6 +45,12 @@ class NotificationUIManager {
   // crbug.com/530376
   static NotificationUIManager* Create(PrefService* local_state);
 
+// Some platforms can integrate their notifications with their own
+// notification center.
+#if defined(OS_MACOSX)
+  static NotificationUIManager* CreateNativeNotificationManager();
+#endif
+
   // Adds a notification to be displayed. Virtual for unit test override.
   virtual void Add(const Notification& notification, Profile* profile) = 0;
 
@@ -89,6 +95,10 @@ class NotificationUIManager {
   // Used when the app is terminating.
   virtual void CancelAll() = 0;
 
+  // Return whether the notification center can be used for native
+  // notifications.
+  virtual bool AcceptNativeNotifications() = 0;
+
  protected:
   NotificationUIManager() {}