chromeos: changes how DisplayManagerObservers are notified

services/ui/ws/window_server_delegate.cc

Index: services/ui/ws/window_server_delegate.cc
diff --git a/services/ui/ws/window_server_delegate.cc b/services/ui/ws/window_server_delegate.cc
index 1250bade481fb812b592a6458c9e29150acb24a7..6d1194b7fb7b463ae8d2e40d190ea3f62923ca7f 100644
--- a/services/ui/ws/window_server_delegate.cc
+++ b/services/ui/ws/window_server_delegate.cc
@@ -21,8 +21,5 @@ WindowServerDelegate::CreateWindowTreeBinding(
   return nullptr;
 }
 
-void WindowServerDelegate::OnWillCreateTreeForWindowManager(
-    bool automatically_create_display_roots) {}
-
 }  // namespace ws
 }  // namespace ui