Implement a MoveCursorToScreenLocation for just the window manager.

ui/aura/test/mus/test_window_manager_client.cc

Index: ui/aura/test/mus/test_window_manager_client.cc
diff --git a/ui/aura/test/mus/test_window_manager_client.cc b/ui/aura/test/mus/test_window_manager_client.cc
index 0131e122978eea12518340c3c1d5c5e146332b59..8ecb9dea8193024e868ce3eef9de2641cfcbdfc3 100644
--- a/ui/aura/test/mus/test_window_manager_client.cc
+++ b/ui/aura/test/mus/test_window_manager_client.cc
@@ -72,6 +72,10 @@ void TestWindowManagerClient::WmSetCursorVisible(bool visible) {}
 void TestWindowManagerClient::WmSetGlobalOverrideCursor(
     base::Optional<ui::CursorData> cursor) {}
 
+void TestWindowManagerClient::WmMoveCursorToDisplayLocation(
+    const gfx::Point& display_pixels,
+    int64_t display_id) {}
+
 void TestWindowManagerClient::OnWmCreatedTopLevelWindow(
     uint32_t change_id,
     Id transport_window_id) {}