WIP: Surface Synchronization System

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"
@@ skipping 15 matching lines @@
   // static
   static std::unique_ptr<WindowCompositorFrameSink> Create(
       const cc::FrameSinkId& frame_sink_id,
       scoped_refptr<cc::ContextProvider> context_provider,
       gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
       std::unique_ptr<WindowCompositorFrameSinkBinding>*
           compositor_frame_sink_binding);
 
   ~WindowCompositorFrameSink() override;
 
+  base::WeakPtr<WindowCompositorFrameSink> GetWeakPtr();
+
+  void SetLocalFrameId(const cc::LocalFrameId& local_frame_id);
+
   // cc::CompositorFrameSink implementation.
   bool BindToClient(cc::CompositorFrameSinkClient* client) override;
   void DetachFromClient() override;
   void SubmitCompositorFrame(cc::CompositorFrame frame) override;
 
  private:
   WindowCompositorFrameSink(
       const cc::FrameSinkId& frame_sink_id,
       scoped_refptr<cc::ContextProvider> context_provider,
       gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
@@ skipping 13 matching lines @@
   cc::LocalFrameId local_frame_id_;
   cc::SurfaceIdAllocator id_allocator_;
   std::unique_ptr<cc::ExternalBeginFrameSource> begin_frame_source_;
   cc::mojom::MojoCompositorFrameSinkPtrInfo compositor_frame_sink_info_;
   cc::mojom::MojoCompositorFrameSinkClientRequest 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_;
   const cc::FrameSinkId frame_sink_id_;
+  base::Optional<cc::CompositorFrame> pending_compositor_frame_;
+
+  base::WeakPtrFactory<WindowCompositorFrameSink> factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowCompositorFrameSink);
 };
 
 // A WindowCompositorFrameSinkBinding is a bundle of mojo interfaces that is
 // created by WindowCompositorFrameSink::Create and is used by or implemented by
 // Mus when a window is attached to a frame-sink..
 // WindowCompositorFrameSinkBinding has no standalone functionality. Its purpose
 // is to allow safely creating and attaching a CompositorFrameSink on one
 // thread and using it on another.
@@ skipping 13 matching lines @@
           compositor_frame_sink_client);
 
   cc::mojom::MojoCompositorFrameSinkRequest compositor_frame_sink_request_;
   cc::mojom::MojoCompositorFrameSinkClientPtrInfo compositor_frame_sink_client_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowCompositorFrameSinkBinding);
 };
 }  // namespace ui
 
 #endif  // SERVICES_UI_PUBLIC_CPP_WINDOW_COMPOSITOR_FRAME_SINK_H_