Makes NewWindow() take set of properties for window

components/mus/ws/server_window.cc

Index: components/mus/ws/server_window.cc
diff --git a/components/mus/ws/server_window.cc b/components/mus/ws/server_window.cc
index 2e40f6fbf244ad044471698c8fb37e98e526ee11..43fecc60852f598e0673fe2f0910e5e79cb0dcdf 100644
--- a/components/mus/ws/server_window.cc
+++ b/components/mus/ws/server_window.cc
@@ -18,6 +18,11 @@ namespace mus {
 namespace ws {
 
 ServerWindow::ServerWindow(ServerWindowDelegate* delegate, const WindowId& id)
+    : ServerWindow(delegate, id, Properties()) {}
+
+ServerWindow::ServerWindow(ServerWindowDelegate* delegate,
+                           const WindowId& id,
+                           const Properties& properties)
     : delegate_(delegate),
       id_(id),
       parent_(nullptr),
@@ -26,6 +31,7 @@ ServerWindow::ServerWindow(ServerWindowDelegate* delegate, const WindowId& id)
       visible_(false),
       opacity_(1),
       can_focus_(true),
+      properties_(properties),
       // Don't notify newly added observers during notification. This causes
       // problems for code that adds an observer as part of an observer
       // notification (such as ServerWindowDrawTracker).