Mus+Ash: Replace (Server)WindowSurface with (Server)WindowCompositorFrameSink

services/ui/public/cpp/window_compositor_frame_sink.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_UI_PUBLIC_CPP_WINDOW_COMPOSITOR_FRAME_SINK_H_
+#define SERVICES_UI_PUBLIC_CPP_WINDOW_COMPOSITOR_FRAME_SINK_H_
+
+#include "base/macros.h"
+#include "cc/ipc/mojo_compositor_frame_sink.mojom.h"
+#include "cc/output/compositor_frame_sink.h"
+#include "cc/output/context_provider.h"
+#include "cc/scheduler/begin_frame_source.h"
+#include "cc/surfaces/surface_id.h"
+#include "mojo/public/cpp/bindings/binding.h"
+
+namespace gpu {
+class GpuChannelHost;
+}
+
+namespace ui {
+
+class WindowCompositorFrameSinkBinding;
+
+class WindowCompositorFrameSink
+    : public cc::CompositorFrameSink,
+      public cc::mojom::MojoCompositorFrameSinkClient {
+ public:
+  // static
+  static std::unique_ptr<WindowCompositorFrameSink> Create(
+      scoped_refptr<cc::ContextProvider> context_provider,
+      std::unique_ptr<WindowCompositorFrameSinkBinding>*
+          compositor_frame_sink_binding);
+
+  ~WindowCompositorFrameSink() override;
+
+  // cc::CompositorFrameSink implementation.
+  bool BindToClient(cc::CompositorFrameSinkClient* client) override;
+  void DetachFromClient() override;
+  void SubmitCompositorFrame(cc::CompositorFrame frame) override;
+
+ private:
+  friend class Window;
+
+  WindowCompositorFrameSink(
+      scoped_refptr<cc::ContextProvider> context_provider,
+      mojo::InterfacePtrInfo<cc::mojom::MojoCompositorFrameSink>
+          compositor_frame_sink_info,
+      cc::mojom::MojoCompositorFrameSinkClientRequest client_request);
+
+  // cc::mojom::MojoCompositorFrameSinkClient implementation:
+  void DidReceiveCompositorFrameAck() override;
+  void ReclaimResources(const cc::ReturnedResourceArray& resources) override;
+
+  std::unique_ptr<cc::BeginFrameSource> begin_frame_source_;
+  mojo::InterfacePtrInfo<cc::mojom::MojoCompositorFrameSink>
+      compositor_frame_sink_info_;
+  mojo::InterfaceRequest<cc::mojom::MojoCompositorFrameSinkClient>
+      client_request_;
+  cc::mojom::MojoCompositorFrameSinkPtr compositor_frame_sink_;
+  std::unique_ptr<mojo::Binding<cc::mojom::MojoCompositorFrameSinkClient>>
+      client_binding_;
+  std::unique_ptr<base::ThreadChecker> thread_checker_;
+
+  DISALLOW_COPY_AND_ASSIGN(WindowCompositorFrameSink);
+};
+
+// A WindowCompositorFrameSinkBinding is a bundle of mojo interfaces that are to
+// be used by or implemented by the Mus window server when passed into
+// Window::AttachCompositorFrameSink. WindowCompositorFrameSinkBinding has no
+// standalone functionality.

[rjkroege, 2016/10/20 22:22:18]

can you say why? How it works, expand... etc.?

[Fady Samuel, 2016/10/21 20:53:27]

Done.

+class WindowCompositorFrameSinkBinding {
+ public:
+  ~WindowCompositorFrameSinkBinding();
+
+ private:
+  friend class Window;
+  friend class WindowCompositorFrameSink;
+
+  WindowCompositorFrameSinkBinding(
+      cc::mojom::MojoCompositorFrameSinkRequest compositor_frame_sink_request,
+      mojo::InterfacePtrInfo<cc::mojom::MojoCompositorFrameSinkClient>
+          compositor_frame_sink_client);
+
+  cc::mojom::MojoCompositorFrameSinkRequest compositor_frame_sink_request_;
+  mojo::InterfacePtrInfo<cc::mojom::MojoCompositorFrameSinkClient>
+      compositor_frame_sink_client_;
+
+  DISALLOW_COPY_AND_ASSIGN(WindowCompositorFrameSinkBinding);
+};
+}  // namespace ui
+
+#endif  // SERVICES_UI_PUBLIC_CPP_WINDOW_COMPOSITOR_FRAME_SINK_H_