Mus: Delete unused Mandoline Surfaces code

components/mus/ws/server_window_surface.h

Index: components/mus/ws/server_window_surface.h
diff --git a/components/mus/ws/server_window_surface.h b/components/mus/ws/server_window_surface.h
index bc5129e623c66970abb29465318eee067518f1c2..0f73a31ec785078bfdf6a00da617a061b9d2414f 100644
--- a/components/mus/ws/server_window_surface.h
+++ b/components/mus/ws/server_window_surface.h
@@ -12,7 +12,6 @@
 #include "cc/surfaces/surface_factory_client.h"
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_id_allocator.h"
-#include "components/mus/public/cpp/surfaces/custom_surface_converter.h"
 #include "components/mus/public/interfaces/compositor_frame.mojom.h"
 #include "components/mus/public/interfaces/window_tree.mojom.h"
 #include "components/mus/ws/ids.h"
@@ -29,8 +28,7 @@ class ServerWindowSurfaceManager;
 
 // Server side representation of a WindowSurface.
 class ServerWindowSurface : public mojom::Surface,
-                            public cc::SurfaceFactoryClient,
-                            public mojo::CustomSurfaceConverter {
+                            public cc::SurfaceFactoryClient {
  public:
   ServerWindowSurface(ServerWindowSurfaceManager* manager,
                       mojo::InterfaceRequest<mojom::Surface> request,
@@ -47,12 +45,6 @@ class ServerWindowSurface : public mojom::Surface,
       mojom::CompositorFramePtr frame,
       const SubmitCompositorFrameCallback& callback) override;
 
-  // Returns the set of windows referenced by the last CompositorFrame submitted
-  // to this window.
-  const std::set<WindowId>& referenced_window_ids() const {
-    return referenced_window_ids_;
-  }
-
   const cc::SurfaceId& id() const { return surface_id_; }
 
   // Destroys old surfaces that have been outdated by a new surface.
@@ -64,28 +56,12 @@ class ServerWindowSurface : public mojom::Surface,
  private:
   ServerWindow* window();
 
-  // Takes a mojom::CompositorFrame |input|, and converts it into a
-  // cc::CompositorFrame. Along the way, this conversion ensures that a
-  // CompositorFrame of this window can only refer to windows within its
-  // subtree. Windows referenced in |input| are stored in
-  // |referenced_window_ids_|.
-  std::unique_ptr<cc::CompositorFrame> ConvertCompositorFrame(
-      const mojom::CompositorFramePtr& input);
-
-  // Overriden from CustomSurfaceConverter:
-  bool ConvertSurfaceDrawQuad(const cc::mojom::DrawQuadPtr& input,
-                              const cc::CompositorFrameMetadata& metadata,
-                              cc::SharedQuadState* sqs,
-                              cc::RenderPass* render_pass) override;
-
   // SurfaceFactoryClient implementation.
   void ReturnResources(const cc::ReturnedResourceArray& resources) override;
   void SetBeginFrameSource(cc::BeginFrameSource* begin_frame_source) override;
 
   ServerWindowSurfaceManager* manager_;  // Owns this.
 
-  // The set of Windows referenced in the last submitted CompositorFrame.
-  std::set<WindowId> referenced_window_ids_;
   gfx::Size last_submitted_frame_size_;
 
   cc::SurfaceId surface_id_;