Route newly created notifications to notification provider API.

chrome/browser/notifications/message_center_notification_manager.h

Index: chrome/browser/notifications/message_center_notification_manager.h
diff --git a/chrome/browser/notifications/message_center_notification_manager.h b/chrome/browser/notifications/message_center_notification_manager.h
index e8400f935431a3e0ba77a9224d8d99a7ab95e9d1..48bfe77316c82dde48d6f7d4a738715762eca7cb 100644
--- a/chrome/browser/notifications/message_center_notification_manager.h
+++ b/chrome/browser/notifications/message_center_notification_manager.h
@@ -181,6 +181,9 @@ class MessageCenterNotificationManager
     // empty string otherwise.
     std::string GetExtensionId();
 
+    // Route a new notification to an app/extension.
+    void AddToAlternateProvider(std::string extension_id);
+
    private:
     // Weak, guaranteed not to be used after profile removal by parent class.
     Profile* profile_;
@@ -206,6 +209,10 @@ class MessageCenterNotificationManager
   // notification is found.
   ProfileNotification* FindProfileNotification(const std::string& id) const;
 
+  // Get the extension ID of the extension that the user chose to take over
+  // Chorme Notification Center.
+  std::string GetExtensionTakingOverNotifications(Profile* profile);
+
 #if defined(OS_WIN)
   // This function is run on update to ensure that the notification balloon is
   // shown only when there are no popups present.