Adds remainder of support for multiple roots to WS

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 2f319b824e3ff3458eb6d0a5314fa088054d2c05..79210b5548038457892405dc2346e7033c5f9546 100644
--- a/components/mus/ws/connection_manager.h
+++ b/components/mus/ws/connection_manager.h
@@ -137,6 +137,9 @@ class ConnectionManager : public ServerWindowDelegate,
   // supplied by the client.
   void WindowManagerChangeCompleted(uint32_t window_manager_change_id,
                                     bool success);
+  void WindowManagerCreatedTopLevelWindow(WindowTreeImpl* wm_connection,
+                                          uint32_t window_manager_change_id,
+                                          Id transport_window_id);
 
   // These functions trivially delegate to all WindowTreeImpls, which in
   // term notify their clients.
@@ -186,6 +189,10 @@ 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.
   //