Hook up BeginFrameSource to SurfaceFactoryClient via SurfaceManager

components/mus/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 COMPONENTS_MUS_WS_SERVER_WINDOW_SURFACE_MANAGER_H_
 #define COMPONENTS_MUS_WS_SERVER_WINDOW_SURFACE_MANAGER_H_
 
 #include <map>
 
 #include "base/macros.h"
@@ skipping 25 matching lines @@
   // the specified type.
   void CreateSurface(mojom::SurfaceType surface_type,
                      mojo::InterfaceRequest<mojom::Surface> request,
                      mojom::SurfaceClientPtr client);
 
   ServerWindow* window() { return window_; }
 
   ServerWindowSurface* GetDefaultSurface();
   ServerWindowSurface* GetUnderlaySurface();
   ServerWindowSurface* GetSurfaceByType(mojom::SurfaceType type);
-  bool HasSurfaceOfType(mojom::SurfaceType type);
+  bool HasSurfaceOfType(mojom::SurfaceType type) const;
+  bool HasAnySurface() const;
+
+  uint32_t id_namespace() const { return surface_id_allocator_.id_namespace(); }
+  SurfaceManager* GetSurfaceManager();
 
  private:
   friend class ServerWindowSurfaceManagerTestApi;
   friend class ServerWindowSurface;
 
-  // Returns true if a surface of |type| has been set and it's size is greater
+  // 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;
 
   cc::SurfaceId GenerateId();
 
   ServerWindow* window_;
 
   cc::SurfaceIdAllocator surface_id_allocator_;
 
   using TypeToSurfaceMap =
       std::map<mojom::SurfaceType, scoped_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 mus
 
 #endif  // COMPONENTS_MUS_WS_SERVER_WINDOW_SURFACE_MANAGER_H_