Improve spelling of "notification".

chrome/browser/ui/unload_controller.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_UNLOAD_CONTROLLER_H_
 #define CHROME_BROWSER_UI_UNLOAD_CONTROLLER_H_
 
 #include <set>
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class Browser;
 class TabStripModel;
 
 namespace content {
 class NotificationSource;
-class NotifictaionDetails;
+class NotificationDetails;
 class WebContents;
 }
 
 namespace chrome {
 
 class UnloadController : public content::NotificationObserver,
                          public TabStripModelObserver {
  public:
   explicit UnloadController(Browser* browser);
   virtual ~UnloadController();
@@ skipping 123 matching lines @@
   base::Callback<void(bool)> on_close_confirmed_;
 
   base::WeakPtrFactory<UnloadController> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UnloadController);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_UI_UNLOAD_CONTROLLER_H_