Mus: Delete unused Mandoline Surfaces code

components/mus/ws/window_server.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 COMPONENTS_MUS_WS_WINDOW_SERVER_H_
 #define COMPONENTS_MUS_WS_WINDOW_SERVER_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
-#include "components/mus/public/cpp/surfaces/custom_surface_converter.h"
 #include "components/mus/public/interfaces/window_manager_factory.mojom.h"
 #include "components/mus/public/interfaces/window_tree.mojom.h"
 #include "components/mus/public/interfaces/window_tree_host.mojom.h"
 #include "components/mus/surfaces/surfaces_state.h"
 #include "components/mus/ws/display.h"
 #include "components/mus/ws/display_manager_delegate.h"
 #include "components/mus/ws/ids.h"
 #include "components/mus/ws/operation.h"
 #include "components/mus/ws/server_window_delegate.h"
 #include "components/mus/ws/server_window_observer.h"
@@ skipping 204 matching lines @@
   // Updates the native cursor if the cursor is currently inside |window|. This
   // is run in response to events that change the mouse cursor properties of
   // |window|.
   void UpdateNativeCursorIfOver(ServerWindow* window);
 
   // Overridden from ServerWindowDelegate:
   mus::SurfacesState* GetSurfacesState() override;
   void OnScheduleWindowPaint(ServerWindow* window) override;
   const ServerWindow* GetRootWindow(const ServerWindow* window) const override;
   void ScheduleSurfaceDestruction(ServerWindow* window) override;
-  ServerWindow* FindWindowForSurface(
-      const ServerWindow* ancestor,
-      mojom::SurfaceType surface_type,
-      const ClientWindowId& client_window_id) override;
 
   // Overridden from ServerWindowObserver:
   void OnWindowDestroyed(ServerWindow* window) override;
   void OnWillChangeWindowHierarchy(ServerWindow* window,
                                    ServerWindow* new_parent,
                                    ServerWindow* old_parent) override;
   void OnWindowHierarchyChanged(ServerWindow* window,
                                 ServerWindow* new_parent,
                                 ServerWindow* old_parent) override;
   void OnWindowBoundsChanged(ServerWindow* window,
@@ skipping 62 matching lines @@
 
   WindowManagerFactoryRegistry window_manager_factory_registry_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowServer);
 };
 
 }  // namespace ws
 }  // namespace mus
 
 #endif  // COMPONENTS_MUS_WS_WINDOW_SERVER_H_