chromeos: changes how DisplayManagerObservers are notified

services/ui/ws/window_server.h

Index: services/ui/ws/window_server.h
diff --git a/services/ui/ws/window_server.h b/services/ui/ws/window_server.h
index f79cf963966e600304070af38dffa3e166c6339e..f072f7739eb689a3e61729e98047172a082355a1 100644
--- a/services/ui/ws/window_server.h
+++ b/services/ui/ws/window_server.h
@@ -42,6 +42,8 @@ class WindowServerDelegate;
 class WindowTree;
 class WindowTreeBinding;
 
+enum class DisplayCreationConfig;
+
 // WindowServer manages the set of clients of the window server (all the
 // WindowTrees) as well as providing the root of the hierarchy.
 class WindowServer : public ServerWindowDelegate,
@@ -66,6 +68,11 @@ class WindowServer : public ServerWindowDelegate,
 
   GpuHost* gpu_host() { return gpu_host_.get(); }
 
+  void SetDisplayCreationConfig(DisplayCreationConfig config);
+  DisplayCreationConfig display_creation_config() const {
+    return display_creation_config_;
+  }
+
   // Creates a new ServerWindow. The return value is owned by the caller, but
   // must be destroyed before WindowServer.
   ServerWindow* CreateServerWindow(
@@ -388,6 +395,8 @@ class WindowServer : public ServerWindowDelegate,
       frame_sink_manager_client_binding_;
   cc::mojom::FrameSinkManagerPtr frame_sink_manager_;
 
+  DisplayCreationConfig display_creation_config_;
+
   DISALLOW_COPY_AND_ASSIGN(WindowServer);
 };