Implement native web notifications for mac

chrome/browser/notifications/platform_notification_service_impl.h

Index: chrome/browser/notifications/platform_notification_service_impl.h
diff --git a/chrome/browser/notifications/platform_notification_service_impl.h b/chrome/browser/notifications/platform_notification_service_impl.h
index d2ac54fd611197a53317e154dce6dac51dd399f3..1b0a4a75c8c44fb57a01f8f2ab828bda0827b1c5 100644
--- a/chrome/browser/notifications/platform_notification_service_impl.h
+++ b/chrome/browser/notifications/platform_notification_service_impl.h
@@ -12,6 +12,7 @@
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/notifications/notification.h"
@@ -125,6 +126,10 @@ class PlatformNotificationServiceImpl
   base::string16 DisplayNameForContextMessage(Profile* profile,
                                               const GURL& origin) const;
 
+  // Platforms that display native notification interact with them through this
+  // object.
+  scoped_ptr<NotificationUIManager> native_notification_ui_manager_;
+
   // Weak reference. Ownership maintains with the test.
   NotificationUIManager* notification_ui_manager_for_tests_;