Revert 268203 "There are many ways to get it wrong."

trunk/src/chrome/browser/ui/panels/test_panel_notification_observer.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_PANELS_TEST_PANEL_NOTIFICATION_OBSERVER_H_
 #define CHROME_BROWSER_UI_PANELS_TEST_PANEL_NOTIFICATION_OBSERVER_H_
 
 #include "base/memory/ref_counted.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 namespace content {
 class MessageLoopRunner;
-class NotificationSource;
+class NotificaitonSource;
 }
 
 // Common base class for a custom notification observer that waits
 // on a notification until an expected state is achieved.
 // Modeled after ui_test_utils notification observers, but can handle
 // more than one occurrence of the notification.
 class TestPanelNotificationObserver : public content::NotificationObserver {
  public:
   TestPanelNotificationObserver(int notification,
                                 const content::NotificationSource& source);
@@ skipping 12 matching lines @@
 
   bool seen_;  // true after transition to expected state has been seen
   bool running_;  // indicates whether message loop is running
   content::NotificationRegistrar registrar_;
   scoped_refptr<content::MessageLoopRunner> message_loop_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(TestPanelNotificationObserver);
 };
 
 #endif  // CHROME_BROWSER_UI_PANELS_TEST_PANEL_NOTIFICATION_OBSERVER_H_