Replace FOR_EACH_OBSERVER in c/b/chromeos with range-based for

chrome/browser/chromeos/login/users/avatar/user_image_sync_observer.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 "chrome/browser/chromeos/login/users/avatar/user_image_sync_observer.h"
 
 #include "base/bind.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/chromeos/login/screens/user_image_screen.h"
 #include "chrome/browser/chromeos/login/users/avatar/user_image_manager.h"
@@ skipping 87 matching lines @@
 
 void UserImageSyncObserver::OnInitialSync() {
   int synced_index;
   bool local_image_updated = false;
   if (!GetSyncedImageIndex(&synced_index) || local_image_changed_) {
     UpdateSyncedImageFromLocal();
   } else if (IsIndexSupported(synced_index) && CanUpdateLocalImageNow()) {
     UpdateLocalImageFromSynced();
     local_image_updated = true;
   }
-  FOR_EACH_OBSERVER(UserImageSyncObserver::Observer, observer_list_,
-      OnInitialSync(local_image_updated));
+  for (auto& observer : observer_list_)
+    observer.OnInitialSync(local_image_updated);
 }
 
 void UserImageSyncObserver::OnPreferenceChanged(const std::string& pref_name) {
   // OnPreferenceChanged can be called before OnIsSyncingChanged.
   if (!is_synced_) {
     is_synced_ = true;
     prefs_->RemoveObserver(this);
     OnInitialSync();
   } else if (CanUpdateLocalImageNow()) {
     UpdateLocalImageFromSynced();
@@ skipping 72 matching lines @@
     UserImageScreen* screen = UserImageScreen::Get(wizard_controller);
     if (wizard_controller->current_screen() == screen) {
       if (screen->user_selected_image())
         return false;
     }
   }
   return true;
 }
 
 }  // namespace chromeos
-