c++ / mojo changes for 'external window mode'

services/ui/ws/window_tree_host_factory.cc

Index: services/ui/ws/window_tree_host_factory.cc
diff --git a/services/ui/ws/window_tree_host_factory.cc b/services/ui/ws/window_tree_host_factory.cc
index 1a2170b0a67144aeeaf31f6260afcce47ada1e00..5ac83b554c562cb973417d5228988be52f33cf6c 100644
--- a/services/ui/ws/window_tree_host_factory.cc
+++ b/services/ui/ws/window_tree_host_factory.cc
@@ -7,6 +7,7 @@
 #include "services/ui/ws/display.h"
 #include "services/ui/ws/display_binding.h"
 #include "services/ui/ws/window_server.h"
+#include "services/ui/ws/window_tree.h"
 
 namespace ui {
 namespace ws {
@@ -37,5 +38,17 @@ void WindowTreeHostFactory::CreateWindowTreeHost(
   display->Init(platform_display_init_params_, std::move(display_binding));
 }
 
+void WindowTreeHostFactory::CreatePlatformWindow(
+    mojom::WindowTreeHostRequest tree_host_request,
+    Id transport_window_id) {
+  tree_->WillCreateRootDisplay(transport_window_id);
+
+  Display* display = new Display(window_server_);
+  std::unique_ptr<DisplayBindingImpl> display_binding(
+      new DisplayBindingImpl(std::move(tree_host_request), display, user_id_,
+                             nullptr /* tree_client */, window_server_));
+  display->Init(platform_display_init_params_, std::move(display_binding));
+}
+
 }  // namespace ws
 }  // namespace ui