Demonstrate external-window-mode in mus-demo

services/ui/ws/test_utils.h

Index: services/ui/ws/test_utils.h
diff --git a/services/ui/ws/test_utils.h b/services/ui/ws/test_utils.h
index caeba5f98d0c7f9b8abf578104c51f520995393e..33639f3ff890b4a81e4e51bf9d886dbd68f1c145 100644
--- a/services/ui/ws/test_utils.h
+++ b/services/ui/ws/test_utils.h
@@ -66,7 +66,8 @@ class TestPlatformScreen : public display::PlatformScreen {
 
   // display::PlatformScreen:
   void AddInterfaces(service_manager::InterfaceRegistry* registry) override {}
-  void Init(display::PlatformScreenDelegate* delegate) override;
+  void Init(display::PlatformScreenDelegate* delegate,
+            WindowMode window_mode = WINDOW_MODE_INTERNAL) override;
   void RequestCloseDisplay(int64_t display_id) override {}
   int64_t GetPrimaryDisplayId() const override;
 
@@ -563,7 +564,7 @@ class TestWindowServerDelegate : public WindowServerDelegate {
   bool got_on_no_more_displays() const { return got_on_no_more_displays_; }
 
   // WindowServerDelegate:
-  void StartDisplayInit() override;
+  void StartDisplayInit(bool window_manager_connected) override;
   void OnNoMoreDisplays() override;
   std::unique_ptr<WindowTreeBinding> CreateWindowTreeBinding(
       BindingType type,