Add a Create method to DesktopNotificationHandler and stubs for the notification objects.

chrome/browser/notifications/desktop_notification_service.h

Index: chrome/browser/notifications/desktop_notification_service.h
diff --git a/chrome/browser/notifications/desktop_notification_service.h b/chrome/browser/notifications/desktop_notification_service.h
index 50f28f5f5c7ca8d5a043d03b2920a1b2c0c13397..7a9749f6acb48d2ffeae81fc87082767131131db 100644
--- a/chrome/browser/notifications/desktop_notification_service.h
+++ b/chrome/browser/notifications/desktop_notification_service.h
@@ -23,7 +23,9 @@
 #include "googleurl/src/gurl.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebTextDirection.h"
 
+class Extension;
 class Notification;
+class NotificationDelegate;
 class NotificationUIManager;
 class NotificationsPrefsCache;
 class PrefService;
@@ -124,6 +126,20 @@ class DesktopNotificationService : public NotificationObserver,
 
   ContentSetting GetContentSetting(const GURL& origin);
 
+  // Creates a notification balloon for the given origin & content and adds it
+  // to the notification ui manager for display.
+  static void ShowBalloon(GURL origin_url,
+                          GURL icon_url,
+                          const string16& title,
+                          const string16& message,
+                          NotificationDelegate* delegate,
+                          Profile* profile);
+
+  // Checks to see if a given origin has permission to create desktop
+  // notifications.  Returns a constant from WebNotificationPresenter
+  // class.
+  static int HasPermission(Profile* profile, const GURL& origin);
+
  private:
   void InitPrefs();
   void StartObserving();