Implement aura::Window::CreateCompositorFrameSink()

components/exo/compositor_frame_sink_holder.h

 // Copyright 2016 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_EXO_COMPOSITOR_FRAME_SINK_HOLDER_H_
 #define COMPONENTS_EXO_COMPOSITOR_FRAME_SINK_HOLDER_H_
 
-#include <list>
-#include <map>
 #include <memory>
 
-#include "cc/ipc/mojo_compositor_frame_sink.mojom.h"
+#include "base/containers/flat_map.h"
+#include "cc/output/compositor_frame_sink_client.h"
 #include "cc/resources/release_callback.h"
-#include "cc/resources/transferable_resource.h"
-#include "cc/scheduler/begin_frame_source.h"
-#include "components/exo/compositor_frame_sink.h"
 #include "components/exo/surface_observer.h"
-#include "mojo/public/cpp/bindings/binding.h"
+
+namespace cc {
+class CompositorFrameSink;
+}
 
 namespace exo {
 class Surface;
 
 // This class talks to MojoCompositorFrameSink and keeps track of references to
 // the contents of Buffers. It's keeped alive by references from
 // release_callbacks_. It's destroyed when its owning Surface is destroyed and
 // the last outstanding release callback is called.
-class CompositorFrameSinkHolder
-    : public base::RefCounted<CompositorFrameSinkHolder>,
-      public cc::ExternalBeginFrameSourceClient,
-      public cc::mojom::MojoCompositorFrameSinkClient,
-      public SurfaceObserver {
+class CompositorFrameSinkHolder : public cc::CompositorFrameSinkClient,
+                                  public SurfaceObserver {
  public:
-  CompositorFrameSinkHolder(Surface* surface,
-                            const cc::FrameSinkId& frame_sink_id,
-                            cc::SurfaceManager* surface_manager);
+  CompositorFrameSinkHolder(
+      Surface* surface,
+      std::unique_ptr<cc::CompositorFrameSink> frame_sink);
+  ~CompositorFrameSinkHolder() override;
 
   bool HasReleaseCallbackForResource(cc::ResourceId id);
   void SetResourceReleaseCallback(cc::ResourceId id,
                                   const cc::ReleaseCallback& callback);
 
-  CompositorFrameSink* GetCompositorFrameSink() { return frame_sink_.get(); }
+  cc::CompositorFrameSink* GetCompositorFrameSink() {
+    return frame_sink_.get();
+  }
 
   base::WeakPtr<CompositorFrameSinkHolder> GetWeakPtr() {
     return weak_factory_.GetWeakPtr();
   }
 
-  // Overridden from cc::mojom::MojoCompositorFrameSinkClient:
-  void DidReceiveCompositorFrameAck(
-      const cc::ReturnedResourceArray& resources) override;
-  void OnBeginFrame(const cc::BeginFrameArgs& args) override;
+  // Overridden from cc::CompositorFrameSinkClient:
+  void SetBeginFrameSource(cc::BeginFrameSource* source) override;
   void ReclaimResources(const cc::ReturnedResourceArray& resources) override;
-
-  // Overridden from cc::ExternalBeginFrameSourceClient:
-  void OnNeedsBeginFrames(bool needs_begin_frames) override;
-  void OnDidFinishFrame(const cc::BeginFrameAck& ack) override;
+  void SetTreeActivationCallback(const base::Closure& callback) override {}
+  void DidReceiveCompositorFrameAck() override;
+  void DidLoseCompositorFrameSink() override {}
+  void OnDraw(const gfx::Transform& transform,
+              const gfx::Rect& viewport,
+              bool resourceless_software_draw) override {}
+  void SetMemoryPolicy(const cc::ManagedMemoryPolicy& policy) override {}
+  void SetExternalTilePriorityConstraints(
+      const gfx::Rect& viewport_rect,
+      const gfx::Transform& transform) override {}
 
   // Overridden from SurfaceObserver:
   void OnSurfaceDestroying(Surface* surface) override;
 
  private:
-  friend class base::RefCounted<CompositorFrameSinkHolder>;
-
-  ~CompositorFrameSinkHolder() override;
 
   // A collection of callbacks used to release resources.
-  using ResourceReleaseCallbackMap = std::map<int, cc::ReleaseCallback>;
+  using ResourceReleaseCallbackMap = base::flat_map<int, cc::ReleaseCallback>;
   ResourceReleaseCallbackMap release_callbacks_;
 
   Surface* surface_;
-  std::unique_ptr<CompositorFrameSink> frame_sink_;
-  std::unique_ptr<cc::ExternalBeginFrameSource> begin_frame_source_;
+  std::unique_ptr<cc::CompositorFrameSink> frame_sink_;
 
   base::WeakPtrFactory<CompositorFrameSinkHolder> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CompositorFrameSinkHolder);
 };
 
 }  // namespace exo
 
 #endif  // COMPONENTS_EXO_COMPOSITOR_FRAME_SINK_HOLDER_H_