aura: Some change to how the client-lib is set up.

services/ui/ws/window_manager_client_unittest.cc

Index: services/ui/ws/window_manager_client_unittest.cc
diff --git a/services/ui/ws/window_manager_client_unittest.cc b/services/ui/ws/window_manager_client_unittest.cc
index 4a5896f9e495882e8bb2c3cc35be77a288da5b1b..2e27fd2656a6ea783e9d194896db73d5ed6b9346 100644
--- a/services/ui/ws/window_manager_client_unittest.cc
+++ b/services/ui/ws/window_manager_client_unittest.cc
@@ -704,7 +704,7 @@ class EstablishConnectionViaFactoryDelegate : public TestWindowManagerDelegate {
 TEST_F(WindowServerTest, EstablishConnectionViaFactory) {
   EstablishConnectionViaFactoryDelegate delegate(window_manager());
   set_window_manager_delegate(&delegate);
-  aura::WindowTreeClient second_client(connector(), this);
+  aura::WindowTreeClient second_client(connector(), nullptr, this);
   second_client.ConnectViaWindowTreeFactory();
   aura::WindowTreeHostMus window_tree_host_in_second_client(&second_client);
   window_tree_host_in_second_client.InitHost();
@@ -732,7 +732,7 @@ TEST_F(WindowServerTest, OnWindowHierarchyChangedIncludesTransientParent) {
   // of the first window and then add it.
   EstablishConnectionViaFactoryDelegate delegate(window_manager());
   set_window_manager_delegate(&delegate);
-  aura::WindowTreeClient second_client(connector(), this);
+  aura::WindowTreeClient second_client(connector(), nullptr, this);
   second_client.ConnectViaWindowTreeFactory();
   aura::WindowTreeHostMus window_tree_host_in_second_client(&second_client);
   window_tree_host_in_second_client.InitHost();