Fix build when ENABLE_MANAGED_USERS is not defined

chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h

Index: chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h
diff --git a/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h b/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h
index 16ca682106d5e3c63594e678cea27ae6beaa90e5..3c82c8f3ab54375ccf9bb4744a530e9b8a70a800 100644
--- a/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h
+++ b/chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h
@@ -9,11 +9,14 @@
 #include "ui/views/layout/layout_manager.h"
 #include "ui/views/window/frame_buttons.h"
 
-class AvatarLabel;
 class AvatarMenuButton;
 class NewAvatarButton;
 class OpaqueBrowserFrameViewLayoutDelegate;
 
+#if defined(ENABLE_MANAGED_USERS)
+class SupervisedUserAvatarLabel;
+#endif
+
 namespace views {
 class ImageButton;
 class Label;
@@ -185,7 +188,9 @@ class OpaqueBrowserFrameViewLayout : public views::LayoutManager {
   views::View* window_icon_;
   views::Label* window_title_;
 
-  AvatarLabel* avatar_label_;
+#if defined(ENABLE_MANAGED_USERS)
+  SupervisedUserAvatarLabel* supervised_user_avatar_label_;
+#endif
   AvatarMenuButton* avatar_button_;
   views::View* new_avatar_button_;