Reduce FOR_EACH_OBSERVER usage in ui/

ui/chromeos/ime/candidate_window_view.cc

 // 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.
 
 #include "ui/chromeos/ime/candidate_window_view.h"
 
 #include <stddef.h>
 
 #include <string>
 
@@ skipping 391 matching lines @@
 }
 
 int CandidateWindowView::GetDialogButtons() const {
   return ui::DIALOG_BUTTON_NONE;
 }
 
 void CandidateWindowView::ButtonPressed(views::Button* sender,
                                         const ui::Event& event) {
   for (size_t i = 0; i < candidate_views_.size(); ++i) {
     if (sender == candidate_views_[i]) {
-      FOR_EACH_OBSERVER(Observer, observers_, OnCandidateCommitted(i));
+      for (Observer& observer : observers_)
+        observer.OnCandidateCommitted(i);
       return;
     }
   }
 }
 
 }  // namespace ime
 }  // namespace ui