Remove usage of FOR_EACH_OBSERVER macro in ui/app_list

ui/app_list/views/app_list_view.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 "ui/app_list/views/app_list_view.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 603 matching lines @@
 void AppListView::OnWidgetDestroying(views::Widget* widget) {
   BubbleDialogDelegateView::OnWidgetDestroying(widget);
   if (delegate_ && widget == GetWidget())
     delegate_->ViewClosing();
 }
 
 void AppListView::OnWidgetActivationChanged(views::Widget* widget,
                                             bool active) {
   // Do not called inherited function as the bubble delegate auto close
   // functionality is not used.
-  if (widget == GetWidget())
-    FOR_EACH_OBSERVER(AppListViewObserver, observers_,
-                      OnActivationChanged(widget, active));
+  if (widget == GetWidget()) {
+    for (auto& observer : observers_)
+      observer.OnActivationChanged(widget, active);
+  }
 }
 
 void AppListView::OnWidgetVisibilityChanged(views::Widget* widget,
                                             bool visible) {
   BubbleDialogDelegateView::OnWidgetVisibilityChanged(widget, visible);
 
   if (widget != GetWidget())
     return;
 
   if (!visible)
@@ skipping 62 matching lines @@
     app_list_main_view_->SetVisible(true);
     // Refocus the search box. However, if the app list widget does not have
     // focus, it means another window has already taken focus, and we *must not*
     // focus the search box (or we would steal focus back into the app list).
     if (GetWidget()->IsActive())
       search_box_view_->search_box()->RequestFocus();
   }
 }
 
 }  // namespace app_list