1 files changed, 85 insertions, 0 deletions
diff --git a/chromium/components/mus/public/cpp/window_surface.h b/chromium/components/mus/public/cpp/window_surface.h
new file mode 100644
index 00000000000..97af8123d61
--- /dev/null
+++ b/chromium/components/mus/public/cpp/window_surface.h
@@ -0,0 +1,85 @@
+// 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 COMPONENTS_MUS_PUBLIC_CPP_WINDOW_SURFACE_H_
+#define COMPONENTS_MUS_PUBLIC_CPP_WINDOW_SURFACE_H_
+
+#include <memory>
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/observer_list.h"
+#include "base/threading/thread_checker.h"
+#include "components/mus/public/interfaces/surface.mojom.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/public/cpp/bindings/interface_ptr_info.h"
+
+namespace mus {
+
+class WindowSurfaceBinding;
+class WindowSurfaceClient;
+class Window;
+
+// A WindowSurface is wrapper to simplify submitting CompositorFrames to
+// Windows, and receiving ReturnedResources.
+class WindowSurface : public mojom::SurfaceClient {
+ public:
+  // static
+  static std::unique_ptr<WindowSurface> Create(
+      std::unique_ptr<WindowSurfaceBinding>* surface_binding);
+
+  ~WindowSurface() override;
+
+  // Called to indicate that the current thread has assumed control of this
+  // object.
+  void BindToThread();
+
+  void SubmitCompositorFrame(cc::CompositorFrame frame,
+                             const base::Closure& callback);
+
+  void set_client(WindowSurfaceClient* client) { client_ = client; }
+
+ private:
+  friend class Window;
+
+  WindowSurface(mojo::InterfacePtrInfo<mojom::Surface> surface_info,
+                mojo::InterfaceRequest<mojom::SurfaceClient> client_request);
+
+  // SurfaceClient implementation:
+  void ReturnResources(mojo::Array<cc::ReturnedResource> resources) override;
+
+  WindowSurfaceClient* client_;
+  mojo::InterfacePtrInfo<mojom::Surface> surface_info_;
+  mojo::InterfaceRequest<mojom::SurfaceClient> client_request_;
+  mojom::SurfacePtr surface_;
+  std::unique_ptr<mojo::Binding<mojom::SurfaceClient>> client_binding_;
+  std::unique_ptr<base::ThreadChecker> thread_checker_;
+
+  DISALLOW_COPY_AND_ASSIGN(WindowSurface);
+};
+
+// A WindowSurfaceBinding is a bundle of mojo interfaces that are to be used by
+// or implemented by the Mus window server when passed into
+// Window::AttachSurface. WindowSurfaceBinding has no standalone functionality.
+class WindowSurfaceBinding {
+ public:
+  ~WindowSurfaceBinding();
+
+ private:
+  friend class WindowSurface;
+  friend class Window;
+
+  WindowSurfaceBinding(
+      mojo::InterfaceRequest<mojom::Surface> surface_request,
+      mojo::InterfacePtrInfo<mojom::SurfaceClient> surface_client);
+
+  mojo::InterfaceRequest<mojom::Surface> surface_request_;
+  mojo::InterfacePtrInfo<mojom::SurfaceClient> surface_client_;
+
+  DISALLOW_COPY_AND_ASSIGN(WindowSurfaceBinding);
+};
+
+}  // namespace mus
+
+#endif  // COMPONENTS_MUS_PUBLIC_CPP_WINDOW_SURFACE_H_