WIP - loop in LayoutManager for preferred size changes

ui/message_center/views/message_center_view.cc

Index: ui/message_center/views/message_center_view.cc
diff --git a/ui/message_center/views/message_center_view.cc b/ui/message_center/views/message_center_view.cc
index 4c7cef3ba6730c0fba3bc6aafa3d2700c49f0bb7..ff6c7a977225133c8352edcf84af5b744c5f9459 100644
--- a/ui/message_center/views/message_center_view.cc
+++ b/ui/message_center/views/message_center_view.cc
@@ -255,7 +255,7 @@ RichMessageCenterButtonBar::RichMessageCenterButtonBar(
 
 // Overridden from views::View:
 void RichMessageCenterButtonBar::ChildVisibilityChanged(views::View* child) {
-  InvalidateLayout();
+  Layout();
 }
 
 // Overridden from views::ButtonListener:
@@ -916,9 +916,8 @@ void MessageCenterView::NotificationsChanged() {
     button_bar_->SetCloseAllVisible(false);
     scroller_->set_focusable(false);
   }
-  scroller_->InvalidateLayout();
   PreferredSizeChanged();
-  Layout();
+  scroller_->Layout();
 }
 
 void MessageCenterView::SetNotificationViewForTest(views::View* view) {