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

services/surfaces/display_factory_impl.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SERVICES_SURFACES_DISPLAY_FACTORY_IMPL_H_
+#define SERVICES_SURFACES_DISPLAY_FACTORY_IMPL_H_
+
+#include "mojo/public/cpp/bindings/strong_binding.h"
+#include "mojo/services/surfaces/public/interfaces/display.mojom.h"
+#include "services/surfaces/display_impl.h"
+
+namespace cc {
+class SurfaceManager;
+}
+
+namespace surfaces {
+
+class DisplayFactoryImpl : public mojo::DisplayFactory {
+ public:
+  DisplayFactoryImpl(cc::SurfaceManager* manager,
+                     uint32_t id_namespace,
+                     DisplayImpl::Client* client,
+                     mojo::InterfaceRequest<mojo::DisplayFactory> request);
+  ~DisplayFactoryImpl() override;
+
+ private:
+  // mojo::DisplayFactory implementation.
+  void Create(mojo::ContextProviderPtr context_provider,
+              mojo::ViewportParameterListenerPtr viewport_parameter_listener,
+              mojo::ResourceReturnerPtr returner,
+              mojo::InterfaceRequest<mojo::Display> display_request) override;
+
+  // We use one ID namespace for all DisplayImpls since the ID is used only by
+  // cc and not exposed through mojom.
+  uint32_t id_namespace_;
+  uint32_t next_local_id_;
+  DisplayImpl::Client* client_;
+  cc::SurfaceManager* manager_;
+  mojo::StrongBinding<mojo::DisplayFactory> binding_;
+};
+
+}  // namespace surfaces
+
+#endif  // SERVICES_SURFACES_DISPLAY_FACTORY_IMPL_H_