Makes it so each windowtreeclient can use whatever ids it wants

components/mus/ws/connection_manager.h

Index: components/mus/ws/connection_manager.h
diff --git a/components/mus/ws/connection_manager.h b/components/mus/ws/connection_manager.h
index 3e1ba7fc232af1c7991d7c6090e9db60685f7a0c..0d934885e4027207b2daff80980298df0099e824 100644
--- a/components/mus/ws/connection_manager.h
+++ b/components/mus/ws/connection_manager.h
@@ -149,7 +149,11 @@ class ConnectionManager : public ServerWindowDelegate,
                                     bool success);
   void WindowManagerCreatedTopLevelWindow(WindowTreeImpl* wm_connection,
                                           uint32_t window_manager_change_id,
-                                          Id transport_window_id);
+                                          const ServerWindow* window);
+
+  // Called when we get an unexpected message from the WindowManager.
+  // TODO(sky): decide what we want to do here.
+  void WindowManagerSentBogusMessage() {}
 
   // These functions trivially delegate to all WindowTreeImpls, which in
   // term notify their clients.
@@ -200,10 +204,6 @@ class ConnectionManager : public ServerWindowDelegate,
       uint32_t window_manager_change_id,
       InFlightWindowManagerChange* change);
 
-  // Called when we get an unexpected message from the WindowManager.
-  // TODO(sky): decide what we want to do here.
-  void WindowManagerSentBogusMessage(WindowTreeImpl* connection) {}
-
   // Invoked when a connection is about to execute a window server operation.
   // Subsequently followed by FinishOperation() once the change is done.
   //