Remove usage of FOR_EACH_OBSERVER macro in ui/app_list

ui/app_list/app_list_item.cc

 // Copyright 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.
 
 #include "ui/app_list/app_list_item.h"
 
 #include "base/logging.h"
 #include "ui/app_list/app_list_item_observer.h"
 
 namespace app_list {
 
 AppListItem::AppListItem(const std::string& id)
     : id_(id),
       highlighted_(false),
       is_installing_(false),
       percent_downloaded_(-1) {
 }
 
 AppListItem::~AppListItem() {
-  FOR_EACH_OBSERVER(AppListItemObserver, observers_, ItemBeingDestroyed());
+  for (auto& observer : observers_)
+    observer.ItemBeingDestroyed();
 }
 
 void AppListItem::SetIcon(const gfx::ImageSkia& icon) {
   icon_ = icon;
-  FOR_EACH_OBSERVER(AppListItemObserver, observers_, ItemIconChanged());
+  for (auto& observer : observers_)
+    observer.ItemIconChanged();
 }
 
 void AppListItem::SetIsInstalling(bool is_installing) {
   if (is_installing_ == is_installing)
     return;
 
   is_installing_ = is_installing;
-  FOR_EACH_OBSERVER(AppListItemObserver,
-                    observers_,
-                    ItemIsInstallingChanged());
+  for (auto& observer : observers_)
+    observer.ItemIsInstallingChanged();
 }
 
 void AppListItem::SetPercentDownloaded(int percent_downloaded) {
   if (percent_downloaded_ == percent_downloaded)
     return;
 
   percent_downloaded_ = percent_downloaded;
-  FOR_EACH_OBSERVER(AppListItemObserver,
-                    observers_,
-                    ItemPercentDownloadedChanged());
+  for (auto& observer : observers_)
+    observer.ItemPercentDownloadedChanged();
 }
 
 void AppListItem::AddObserver(AppListItemObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void AppListItem::RemoveObserver(AppListItemObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
@@ skipping 33 matching lines @@
       + " [" + position_.ToDebugString() + "]";
 }
 
 // Protected methods
 
 void AppListItem::SetName(const std::string& name) {
   if (name_ == name && (short_name_.empty() || short_name_ == name))
     return;
   name_ = name;
   short_name_.clear();
-  FOR_EACH_OBSERVER(AppListItemObserver, observers_, ItemNameChanged());
+  for (auto& observer : observers_)
+    observer.ItemNameChanged();
 }
 
 void AppListItem::SetNameAndShortName(const std::string& name,
                                       const std::string& short_name) {
   if (name_ == name && short_name_ == short_name)
     return;
   name_ = name;
   short_name_ = short_name;
-  FOR_EACH_OBSERVER(AppListItemObserver, observers_, ItemNameChanged());
+  for (auto& observer : observers_)
+    observer.ItemNameChanged();
 }
 
 }  // namespace app_list