Service CreateNewWindow on the UI thread with a new mojo interface

content/browser/renderer_host/render_process_host_impl.h

Index: content/browser/renderer_host/render_process_host_impl.h
diff --git a/content/browser/renderer_host/render_process_host_impl.h b/content/browser/renderer_host/render_process_host_impl.h
index aa6898de84d4ea2270dc7a2cb9b6686233b00ab7..d8dfb720ec43173ae993f0dc82172b92d4ad36c8 100644
--- a/content/browser/renderer_host/render_process_host_impl.h
+++ b/content/browser/renderer_host/render_process_host_impl.h
@@ -26,6 +26,7 @@
 #include "content/browser/renderer_host/frame_sink_provider_impl.h"
 #include "content/browser/renderer_host/offscreen_canvas_provider_impl.h"
 #include "content/browser/webrtc/webrtc_eventlog_host.h"
+#include "content/common/associated_interface_registry_impl.h"
 #include "content/common/associated_interfaces.mojom.h"
 #include "content/common/content_export.h"
 #include "content/common/indexed_db/indexed_db.mojom.h"
@@ -460,6 +461,8 @@ class CONTENT_EXPORT RenderProcessHostImpl
   // delete ourselves.
   IDMap<IPC::Listener*> listeners_;
 
+  std::unique_ptr<AssociatedInterfaceRegistryImpl> associated_registry_;
+
   mojo::AssociatedBinding<mojom::RouteProvider> route_provider_binding_;
   mojo::AssociatedBindingSet<mojom::AssociatedInterfaceProvider, int32_t>
       associated_interface_provider_bindings_;