Reduce FOR_EACH_OBSERVER usage in ui/

ui/aura/test/test_cursor_client.cc

Index: ui/aura/test/test_cursor_client.cc
diff --git a/ui/aura/test/test_cursor_client.cc b/ui/aura/test/test_cursor_client.cc
index 123046cd450786524ddfd699c70dc803dbc3ca1e..1b581c623db7b7b9f58cd98b5217dc68a71f1ef9 100644
--- a/ui/aura/test/test_cursor_client.cc
+++ b/ui/aura/test/test_cursor_client.cc
@@ -33,14 +33,14 @@ gfx::NativeCursor TestCursorClient::GetCursor() const {
 
 void TestCursorClient::ShowCursor() {
   visible_ = true;
-  FOR_EACH_OBSERVER(aura::client::CursorClientObserver, observers_,
-                    OnCursorVisibilityChanged(true));
+  for (auto& observer : observers_)
+    observer.OnCursorVisibilityChanged(true);
 }
 
 void TestCursorClient::HideCursor() {
   visible_ = false;
-  FOR_EACH_OBSERVER(aura::client::CursorClientObserver, observers_,
-                    OnCursorVisibilityChanged(false));
+  for (auto& observer : observers_)
+    observer.OnCursorVisibilityChanged(false);
 }
 
 void TestCursorClient::SetCursorSet(ui::CursorSetType cursor_set) {