Remove FOR_EACH_OBSERVER macro usage in chrome/browser/ui

chrome/browser/ui/ash/session_state_delegate_chromeos.cc

Index: chrome/browser/ui/ash/session_state_delegate_chromeos.cc
diff --git a/chrome/browser/ui/ash/session_state_delegate_chromeos.cc b/chrome/browser/ui/ash/session_state_delegate_chromeos.cc
index 686996a3758047317a222a2fca01b4dcc0279039..2b86566156f7e69805644e2405d07794b76cce8e 100644
--- a/chrome/browser/ui/ash/session_state_delegate_chromeos.cc
+++ b/chrome/browser/ui/ash/session_state_delegate_chromeos.cc
@@ -237,14 +237,14 @@ void SessionStateDelegateChromeos::LoggedInStateChanged() {
 
 void SessionStateDelegateChromeos::ActiveUserChanged(
     const user_manager::User* active_user) {
-  FOR_EACH_OBSERVER(ash::SessionStateObserver, session_state_observer_list_,
-                    ActiveUserChanged(active_user->GetAccountId()));
+  for (ash::SessionStateObserver& observer : session_state_observer_list_)
+    observer.ActiveUserChanged(active_user->GetAccountId());
 }
 
 void SessionStateDelegateChromeos::UserAddedToSession(
     const user_manager::User* added_user) {
-  FOR_EACH_OBSERVER(ash::SessionStateObserver, session_state_observer_list_,
-                    UserAddedToSession(added_user->GetAccountId()));
+  for (ash::SessionStateObserver& observer : session_state_observer_list_)
+    observer.UserAddedToSession(added_user->GetAccountId());
 }
 
 void SessionStateDelegateChromeos::OnUserAddingStarted() {
@@ -265,9 +265,8 @@ void SessionStateDelegateChromeos::SetSessionState(SessionState new_state,
 }
 
 void SessionStateDelegateChromeos::NotifySessionStateChanged() {
-  FOR_EACH_OBSERVER(ash::SessionStateObserver,
-                    session_state_observer_list_,
-                    SessionStateChanged(session_state_));
+  for (ash::SessionStateObserver& observer : session_state_observer_list_)
+    observer.SessionStateChanged(session_state_);
 }
 
 void DoSwitchUser(const AccountId& account_id) {