Reduce usage of FOR_EACH_OBSERVER macro in components/

components/omnibox/browser/omnibox_popup_model.cc

 // 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.
 
 #include "components/omnibox/browser/omnibox_popup_model.h"
 
 #include <algorithm>
 
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 266 matching lines @@
   // If we're going to trim the window size to no longer include the hovered
   // line, turn hover off.  Practically, this shouldn't happen, but it
   // doesn't hurt to be defensive.
   if ((hovered_line_ != kNoMatch) && (result.size() <= hovered_line_))
     SetHoveredLine(kNoMatch);
 
   bool popup_was_open = view_->IsOpen();
   view_->UpdatePopupAppearance();
   // If popup has just been shown or hidden, notify observers.
   if (view_->IsOpen() != popup_was_open) {
-    FOR_EACH_OBSERVER(OmniboxPopupModelObserver, observers_,
-                      OnOmniboxPopupShownOrHidden());
+    for (OmniboxPopupModelObserver& observer : observers_)
+      observer.OnOmniboxPopupShownOrHidden();
   }
 }
 
 void OmniboxPopupModel::AddObserver(OmniboxPopupModelObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void OmniboxPopupModel::RemoveObserver(OmniboxPopupModelObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 void OmniboxPopupModel::SetAnswerBitmap(const SkBitmap& bitmap) {
   answer_bitmap_ = bitmap;
   view_->UpdatePopupAppearance();
 }