Add a Display and ContextProvider concept to mojom, use to recreate

services/native_viewport/viewport_surface.cc

Index: services/native_viewport/viewport_surface.cc
diff --git a/services/native_viewport/viewport_surface.cc b/services/native_viewport/viewport_surface.cc
index 5cee11b47f1bfbba29e7d0984baa3cf54c99dcc3..631e174a39f9f67f9e2930edc0b885b1f91f4833 100644
--- a/services/native_viewport/viewport_surface.cc
+++ b/services/native_viewport/viewport_surface.cc
@@ -57,6 +57,7 @@ void ViewportSurface::SetChildId(cc::SurfaceId child_id) {
 }
 
 void ViewportSurface::BindSurfaceToNativeViewport() {
+  /*
   mojo::ViewportParameterListenerPtr listener;
   auto listener_request = GetProxy(&listener);
   mojo::CommandBufferPtr command_buffer;
@@ -70,6 +71,7 @@ void ViewportSurface::BindSurfaceToNativeViewport() {
                                     Size::From(size_), listener_request.Pass());
 
   SubmitFrame();
+  */
 }
 
 void ViewportSurface::SubmitFrame() {