WIP: move OffscreenCanvas into new display compositor

components/display_compositor/gpu_compositor_frame_sink.h

 // 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_DISPLAY_COMPOSITOR_GPU_COMPOSITOR_FRAME_SINK_H_
 #define COMPONENTS_DISPLAY_COMPOSITOR_GPU_COMPOSITOR_FRAME_SINK_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "cc/ipc/display_compositor.mojom.h"
 #include "cc/ipc/mojo_compositor_frame_sink.mojom.h"
 #include "cc/surfaces/compositor_frame_sink_support.h"
 #include "cc/surfaces/compositor_frame_sink_support_client.h"
 #include "components/display_compositor/display_compositor_export.h"
 #include "components/display_compositor/gpu_compositor_frame_sink_delegate.h"
 #include "mojo/public/cpp/bindings/binding.h"
 
 namespace display_compositor {
 
 // Server side representation of a WindowSurface.
 class DISPLAY_COMPOSITOR_EXPORT GpuCompositorFrameSink
     : public NON_EXPORTED_BASE(cc::CompositorFrameSinkSupportClient),
-      public NON_EXPORTED_BASE(cc::mojom::MojoCompositorFrameSink),
-      public NON_EXPORTED_BASE(cc::mojom::MojoCompositorFrameSinkPrivate) {
+      public NON_EXPORTED_BASE(cc::mojom::MojoCompositorFrameSink) {
  public:
   GpuCompositorFrameSink(
       GpuCompositorFrameSinkDelegate* delegate,
       std::unique_ptr<cc::CompositorFrameSinkSupport>,
-      cc::mojom::MojoCompositorFrameSinkPrivateRequest private_request,
       cc::mojom::MojoCompositorFrameSinkClientPtr client);
 
   ~GpuCompositorFrameSink() override;
 
   // cc::mojom::MojoCompositorFrameSink:
   void EvictFrame() override;
   void SetNeedsBeginFrame(bool needs_begin_frame) override;
   void SubmitCompositorFrame(const cc::LocalSurfaceId& local_surface_id,
                              cc::CompositorFrame frame) override;
   void Require(const cc::LocalSurfaceId& local_surface_id,
                const cc::SurfaceSequence& sequence) override;
   void Satisfy(const cc::SurfaceSequence& sequence) override;
 
-  // cc::mojom::MojoCompositorFrameSinkPrivate:
-  void AddChildFrameSink(const cc::FrameSinkId& child_frame_sink_id) override;
-  void RemoveChildFrameSink(
-      const cc::FrameSinkId& child_frame_sink_id) override;
-
  protected:
   void OnClientConnectionLost();
-  void OnPrivateConnectionLost();
+  void SetClientConnectionLost(bool client_connection_lost) {
+    client_connection_lost_ = client_connection_lost;
+  }
+  bool GetClientConnectionLost() { return client_connection_lost_; }
+  void SetPrivateConnectionLost(bool private_connection_lost) {
+    private_connection_lost_ = private_connection_lost;
+  }
+  bool GetPrivateConnectionLost() { return private_connection_lost_; }
 
   GpuCompositorFrameSinkDelegate* const delegate_;
   std::unique_ptr<cc::CompositorFrameSinkSupport> support_;
 
  private:
   // cc::CompositorFrameSinkSupportClient implementation:
   void DidReceiveCompositorFrameAck() override;
   void OnBeginFrame(const cc::BeginFrameArgs& args) override;
   void ReclaimResources(const cc::ReturnedResourceArray& resources) override;
   void WillDrawSurface() override;
 
   bool client_connection_lost_ = false;
-  bool private_connection_lost_ = false;
+  bool private_connection_lost_ = true;
 
   cc::mojom::MojoCompositorFrameSinkClientPtr client_;
-  mojo::Binding<cc::mojom::MojoCompositorFrameSinkPrivate>
-      compositor_frame_sink_private_binding_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuCompositorFrameSink);
 };
 
 }  // namespace display_compositor
 
 #endif  // COMPONENTS_DISPLAY_COMPOSITOR_GPU_COMPOSITOR_FRAME_SINK_H_