WIP: Propagate SurfaceID up window tree hierarchy

services/ui/ws/server_window_surface_manager.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 SERVICES_UI_WS_SERVER_WINDOW_SURFACE_MANAGER_H_
 #define SERVICES_UI_WS_SERVER_WINDOW_SURFACE_MANAGER_H_
 
 #include <map>
 
 #include "base/macros.h"
 #include "cc/ipc/compositor_frame.mojom.h"
 #include "cc/surfaces/surface_factory.h"
 #include "cc/surfaces/surface_id.h"
+#include "cc/surfaces/surface_sequence_generator.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "services/ui/public/interfaces/window_tree.mojom.h"
 
 namespace ui {
 namespace ws {
 
 class ServerWindow;
 class ServerWindowSurface;
 class ServerWindowSurfaceManagerTestApi;
 
 // ServerWindowSurfaceManager tracks the surfaces associated with a
 // ServerWindow.
 class ServerWindowSurfaceManager {
  public:
   explicit ServerWindowSurfaceManager(ServerWindow* window);
   ~ServerWindowSurfaceManager();
 
   // Returns true if the surfaces from this manager should be drawn.
   bool ShouldDraw();
 
   // Creates a new surface of the specified type, replacing the existing one of
   // the specified type.
   void CreateSurface(mojom::SurfaceType surface_type,
                      mojo::InterfaceRequest<mojom::Surface> request,
                      mojom::SurfaceClientPtr client);
 
+  // TODO(fsamuel): This is temporary until we replace SurfaceSequences with
+  // refcounting.
+  cc::SurfaceSequence CreateSurfaceSequence();
+
+  void SatisfySurfaceSequence(const cc::SurfaceSequence& sequence);
+
   ServerWindow* window() { return window_; }
 
   ServerWindowSurface* GetDefaultSurface() const;
   ServerWindowSurface* GetUnderlaySurface() const;
   ServerWindowSurface* GetSurfaceByType(mojom::SurfaceType type) const;
   bool HasSurfaceOfType(mojom::SurfaceType type) const;
   bool HasAnySurface() const;
 
   cc::SurfaceManager* GetSurfaceManager();
 
  private:
   friend class ServerWindowSurfaceManagerTestApi;
   friend class ServerWindowSurface;
 
   // Returns true if a surface of |type| has been set and its size is greater
   // than the size of the window.
   bool IsSurfaceReadyAndNonEmpty(mojom::SurfaceType type) const;
 
   ServerWindow* window_;
+  cc::FrameSinkId frame_sink_id_;
+  cc::SurfaceSequenceGenerator surface_sequence_generator_;
 
   using TypeToSurfaceMap =
       std::map<mojom::SurfaceType, std::unique_ptr<ServerWindowSurface>>;
 
   TypeToSurfaceMap type_to_surface_map_;
 
   // While true the window is not drawn. This is initially true if the window
   // has the property |kWaitForUnderlay_Property|. This is set to false once
   // the underlay and default surface have been set *and* their size is at
   // least that of the window. Ideally we would wait for sizes to match, but
   // the underlay is not necessarily as big as the window.
   bool waiting_for_initial_frames_;
 
   DISALLOW_COPY_AND_ASSIGN(ServerWindowSurfaceManager);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_SERVER_WINDOW_SURFACE_MANAGER_H_