Teach the native viewport service to draw a Surface into itself

mojo/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 MOJO_SERVICES_NATIVE_VIEWPORT_VIEWPORT_SURFACE_H_
+#define MOJO_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/public/interfaces/gpu/gpu.mojom.h"
+#include "mojo/services/public/interfaces/surfaces/surfaces.mojom.h"
+#include "mojo/services/public/interfaces/surfaces/surfaces_service.mojom.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/gfx/rect.h"
+
+namespace cc {
+class SurfaceIdAllocator;
+}
+
+namespace mojo {
+
+// This manages the surface that draws to a particular NativeViewport instance.
+class ViewportSurface : public SurfaceClient {
+ public:
+  ViewportSurface(SurfacesService* surfaces_service,
+                  Gpu* gpu_service,
+                  const gfx::Rect& bounds,
+                  cc::SurfaceId child_id);
+  virtual ~ViewportSurface();
+
+  void SetWidgetId(uint64_t widget_id);
+  void SetBounds(const gfx::Rect& bounds);
+  void SetChildId(cc::SurfaceId child_id);
+
+ private:
+  void OnSurfaceConnectionCreated(SurfacePtr surface, uint32_t id_namespace);
+  void BindSurfaceToNativeViewport();
+  void SubmitFrame();
+
+  // SurfaceClient implementation.
+  virtual void ReturnResources(Array<ReturnedResourcePtr> resources) OVERRIDE;
+
+  SurfacePtr surface_;
+  Gpu* gpu_service_;
+  uint64_t widget_id_;
+  gfx::Rect bounds_;
+  scoped_ptr<cc::SurfaceIdAllocator> id_allocator_;
+  cc::SurfaceId id_;
+  cc::SurfaceId child_id_;
+  base::WeakPtrFactory<ViewportSurface> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(ViewportSurface);
+};
+
+}  // namespace mojo
+
+#endif  // MOJO_SERVICES_NATIVE_VIEWPORT_VIEWPORT_SURFACE_H_