Remove usage of FOR_EACH_OBSERVER macro in ui/views/.

ui/views/focus/focus_manager.cc

Index: ui/views/focus/focus_manager.cc
diff --git a/ui/views/focus/focus_manager.cc b/ui/views/focus/focus_manager.cc
index 80a4dc8d6bdd0c7b67ee984e6081e434cebe6db1..ffcbd97b6677741f0118b8c1faa4012da950ac4c 100644
--- a/ui/views/focus/focus_manager.cc
+++ b/ui/views/focus/focus_manager.cc
@@ -317,8 +317,8 @@ void FocusManager::SetFocusedViewWithReason(
   // Update the reason for the focus change (since this is checked by
   // some listeners), then notify all listeners.
   focus_change_reason_ = reason;
-  FOR_EACH_OBSERVER(FocusChangeListener, focus_change_listeners_,
-                    OnWillChangeFocus(focused_view_, view));
+  for (auto& observer : focus_change_listeners_)
+    observer.OnWillChangeFocus(focused_view_, view);
 
   View* old_focused_view = focused_view_;
   focused_view_ = view;
@@ -331,8 +331,8 @@ void FocusManager::SetFocusedViewWithReason(
   if (focused_view_)
     focused_view_->Focus();
 
-  FOR_EACH_OBSERVER(FocusChangeListener, focus_change_listeners_,
-                    OnDidChangeFocus(old_focused_view, focused_view_));
+  for (auto& observer : focus_change_listeners_)
+    observer.OnDidChangeFocus(old_focused_view, focused_view_);
 }
 
 void FocusManager::ClearFocus() {