Reduce usage of FOR_EACH_OBSERVER macro in chrome/browser/signin

chrome/browser/status_icons/status_icon.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 "chrome/browser/status_icons/status_icon.h"
 
 #include <utility>
 
 #include "build/build_config.h"
 #include "chrome/browser/status_icons/status_icon_observer.h"
@@ skipping 10 matching lines @@
 
 void StatusIcon::RemoveObserver(StatusIconObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 bool StatusIcon::HasObservers() const {
   return observers_.might_have_observers();
 }
 
 void StatusIcon::DispatchClickEvent() {
-  FOR_EACH_OBSERVER(StatusIconObserver, observers_, OnStatusIconClicked());
+  for (StatusIconObserver& observer : observers_)
+    observer.OnStatusIconClicked();
 }
 
 #if defined(OS_WIN)
 void StatusIcon::DispatchBalloonClickEvent() {
-  FOR_EACH_OBSERVER(StatusIconObserver, observers_, OnBalloonClicked());
+  for (StatusIconObserver& observer : observers_)
+    observer.OnBalloonClicked();
 }
 #endif
 
 void StatusIcon::ForceVisible() {}
 
 void StatusIcon::SetContextMenu(std::unique_ptr<StatusIconMenuModel> menu) {
   // The UI may been showing a menu for the current model, don't destroy it
   // until we've notified the UI of the change.
   std::unique_ptr<StatusIconMenuModel> old_menu =
       std::move(context_menu_contents_);
   context_menu_contents_ = std::move(menu);
   UpdatePlatformContextMenu(context_menu_contents_.get());
 }