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

services/native_viewport/viewport_surface.h

-// Copyright 2014 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_NATIVE_VIEWPORT_VIEWPORT_SURFACE_H_
-#define SERVICES_NATIVE_VIEWPORT_VIEWPORT_SURFACE_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "cc/surfaces/surface_id.h"
-#include "mojo/services/gpu/public/interfaces/gpu.mojom.h"
-#include "mojo/services/surfaces/public/interfaces/surfaces.mojom.h"
-#include "ui/gfx/native_widget_types.h"
-#include "ui/gfx/size.h"
-
-namespace native_viewport {
-
-// This manages the surface that draws to a particular NativeViewport instance.
-class ViewportSurface {
- public:
-  ViewportSurface(mojo::SurfacePtr surface,
-                  mojo::Gpu* gpu_service,
-                  const gfx::Size& size,
-                  cc::SurfaceId child_id);
-  ~ViewportSurface();
-
-  void SetWidgetId(uint64_t widget_id);
-  void SetSize(const gfx::Size& size);
-  void SetChildId(cc::SurfaceId child_id);
-
- private:
-  void BindSurfaceToNativeViewport();
-  void SubmitFrame();
-
-  mojo::SurfacePtr surface_;
-  mojo::Gpu* gpu_service_;
-  uint64_t widget_id_;
-  gfx::Size size_;
-  bool gles2_bound_surface_created_;
-  cc::SurfaceId child_id_;
-  base::WeakPtrFactory<ViewportSurface> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ViewportSurface);
-};
-
-}  // namespace native_viewport
-
-#endif  // SERVICES_NATIVE_VIEWPORT_VIEWPORT_SURFACE_H_