Adds support for multiple displays to WmTestBase

services/ui/public/cpp/tests/test_window_tree_client_setup.h

Index: services/ui/public/cpp/tests/test_window_tree_client_setup.h
diff --git a/services/ui/public/cpp/tests/test_window_tree_client_setup.h b/services/ui/public/cpp/tests/test_window_tree_client_setup.h
index 7f5ae7aa0ef2a31eeb590c8a861e29ba6b0d7343..e7146f9a45372a34de12ad6483bfd4bcad313e47 100644
--- a/services/ui/public/cpp/tests/test_window_tree_client_setup.h
+++ b/services/ui/public/cpp/tests/test_window_tree_client_setup.h
@@ -30,8 +30,7 @@ class TestWindowTreeClientSetup {
   // Initializes the WindowTreeClient.
   void Init(WindowTreeClientDelegate* window_tree_delegate);
   void InitForWindowManager(WindowTreeClientDelegate* window_tree_delegate,
-                            WindowManagerDelegate* window_manager_delegate,
-                            const display::Display& display);
+                            WindowManagerDelegate* window_manager_delegate);
 
   // The WindowTree that WindowTreeClient talks to.
   TestWindowTree* window_tree() { return window_tree_.get(); }