Reduce usage of FOR_EACH_OBSERVER macro in components/

components/prefs/overlay_user_pref_store.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/prefs/overlay_user_pref_store.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
@@ skipping 112 matching lines @@
   underlay_->CommitPendingWrite();
   // We do not write our content intentionally.
 }
 
 void OverlayUserPrefStore::SchedulePendingLossyWrites() {
   underlay_->SchedulePendingLossyWrites();
 }
 
 void OverlayUserPrefStore::ReportValueChanged(const std::string& key,
                                               uint32_t flags) {
-  FOR_EACH_OBSERVER(PrefStore::Observer, observers_, OnPrefValueChanged(key));
+  for (PrefStore::Observer& observer : observers_)
+    observer.OnPrefValueChanged(key);
 }
 
 void OverlayUserPrefStore::OnPrefValueChanged(const std::string& key) {
   if (!overlay_.GetValue(GetOverlayKey(key), NULL))
     ReportValueChanged(GetOverlayKey(key), DEFAULT_PREF_WRITE_FLAGS);
 }
 
 void OverlayUserPrefStore::OnInitializationCompleted(bool succeeded) {
-  FOR_EACH_OBSERVER(PrefStore::Observer, observers_,
-                    OnInitializationCompleted(succeeded));
+  for (PrefStore::Observer& observer : observers_)
+    observer.OnInitializationCompleted(succeeded);
 }
 
 void OverlayUserPrefStore::RegisterOverlayPref(const std::string& key) {
   RegisterOverlayPref(key, key);
 }
 
 void OverlayUserPrefStore::RegisterOverlayPref(
     const std::string& overlay_key,
     const std::string& underlay_key) {
   DCHECK(!overlay_key.empty()) << "Overlay key is empty";
@@ skipping 28 matching lines @@
   NamesMap::const_iterator i =
       overlay_to_underlay_names_map_.find(overlay_key);
   return i != overlay_to_underlay_names_map_.end() ? i->second : overlay_key;
 }
 
 bool OverlayUserPrefStore::ShallBeStoredInOverlay(
     const std::string& key) const {
   return overlay_to_underlay_names_map_.find(key) !=
       overlay_to_underlay_names_map_.end();
 }