Converts some services to use aura-mus

ui/aura/mus/window_port_mus.h

Index: ui/aura/mus/window_port_mus.h
diff --git a/ui/aura/mus/window_port_mus.h b/ui/aura/mus/window_port_mus.h
index 50def4cce6d87d45e5fdf313d055568ab6cc241b..e88b694694432e2114c78b695f36cd1a849eb9a0 100644
--- a/ui/aura/mus/window_port_mus.h
+++ b/ui/aura/mus/window_port_mus.h
@@ -13,6 +13,7 @@
 #include "base/logging.h"
 #include "base/macros.h"
 #include "services/ui/public/interfaces/cursor.mojom.h"
+#include "services/ui/public/interfaces/window_tree.mojom.h"
 #include "services/ui/public/interfaces/window_tree_constants.mojom.h"
 #include "ui/aura/aura_export.h"
 #include "ui/aura/mus/mus_types.h"
@@ -54,6 +55,12 @@ class AURA_EXPORT WindowPortMus : public WindowPort, public WindowMus {
   ui::mojom::Cursor predefined_cursor() const { return predefined_cursor_; }
   void SetPredefinedCursor(ui::mojom::Cursor cursor_id);
 
+  // Embeds a new client in this Window. See WindowTreeClient::Embed() for
+  // details on arguments.
+  void Embed(ui::mojom::WindowTreeClientPtr client,
+             uint32_t flags,
+             const ui::mojom::WindowTree::EmbedCallback& callback);
+
   std::unique_ptr<WindowCompositorFrameSink> RequestCompositorFrameSink(
       ui::mojom::CompositorFrameSinkType type,
       scoped_refptr<cc::ContextProvider> context_provider,