Replace more ObserverList with base::ObserverList.

ui/chromeos/ime/candidate_window_view.h

 // Copyright 2014 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_CHROMEOS_IME_CANDIDATE_WINDOW_VIEW_H_
 #define UI_CHROMEOS_IME_CANDIDATE_WINDOW_VIEW_H_
 
 #include "ui/base/ime/candidate_window.h"
 #include "ui/chromeos/ui_chromeos_export.h"
 #include "ui/views/bubble/bubble_delegate.h"
@@ skipping 75 matching lines @@
   void MaybeInitializeCandidateViews(
       const ui::CandidateWindow& candidate_window);
 
   // The candidate window data model.
   ui::CandidateWindow candidate_window_;
 
   // The index in the current page of the candidate currently being selected.
   int selected_candidate_index_in_page_;
 
   // The observers of the object.
-  ObserverList<Observer> observers_;
+  base::ObserverList<Observer> observers_;
 
   // Views created in the class will be part of tree of |this|, so these
   // child views will be deleted when |this| is deleted.
   InformationTextArea* auxiliary_text_;
   InformationTextArea* preedit_;
   views::View* candidate_area_;
 
   // The candidate views are used for rendering candidates.
   std::vector<CandidateView*> candidate_views_;
 
@@ skipping 20 matching lines @@
   // send OnCandidateWindowOpened and OnCandidateWindowClosed events.
   bool was_candidate_window_open_;
 
   DISALLOW_COPY_AND_ASSIGN(CandidateWindowView);
 };
 
 }  // namespace ime
 }  // namespace ui
 
 #endif  // UI_CHROMEOS_IME_CANDIDATE_WINDOW_VIEW_H_