Template methods on Timer classes instead of the classes themselves.

ui/message_center/views/message_popup_collection.h

 // Copyright (c) 2013 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 UI_MESSAGE_CENTER_VIEWS_MESSAGE_POPUP_COLLECTION_H_
 #define UI_MESSAGE_CENTER_VIEWS_MESSAGE_POPUP_COLLECTION_H_
 
 #include <list>
 #include <map>
 
@@ skipping 147 matching lines @@
 
   // This is only used to compare with incoming events, do not assume that
   // the toast will be valid if this pointer is non-NULL.
   ToastContentsView* latest_toast_entered_;
 
   // Denotes a mode when user is clicking the Close button of toasts in a
   // sequence, w/o moving the mouse. We reposition the toasts so the next one
   // happens to be right under the mouse, and the user can just dispose of
   // multipel toasts by clicking. The mode ends when defer_timer_ expires.
   bool user_is_closing_toasts_by_clicking_;
-  scoped_ptr<base::OneShotTimer<MessagePopupCollection> > defer_timer_;
+  scoped_ptr<base::OneShotTimer> defer_timer_;
   // The top edge to align the position of the next toast during 'close by
   // clicking" mode.
   // Only to be used when user_is_closing_toasts_by_clicking_ is true.
   int target_top_edge_;
 
   // Weak, only exists temporarily in tests.
   scoped_ptr<base::RunLoop> run_loop_for_test_;
 
   scoped_ptr<MessageViewContextMenuController> context_menu_controller_;
 
   // Gives out weak pointers to toast contents views which have an unrelated
   // lifetime.  Must remain the last member variable.
   base::WeakPtrFactory<MessagePopupCollection> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MessagePopupCollection);
 };
 
 }  // namespace message_center
 
 #endif // UI_MESSAGE_CENTER_VIEWS_MESSAGE_POPUP_COLLECTION_H_