[Ozone-Demo] Update Surfaceless renderer

ui/ozone/demo/surfaceless_gl_renderer.cc

 // 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.
 
 #include "ui/ozone/demo/surfaceless_gl_renderer.h"
 
 #include "base/bind.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_image.h"
@@ skipping 115 matching lines @@
           base::Bind(&SurfacelessGlRenderer::OnSwapBuffersAck,
                      weak_ptr_factory_.GetWeakPtr())))
     LOG(FATAL) << "Failed to swap buffers";
 }
 
 void SurfacelessGlRenderer::OnSwapBuffersAck() {
   is_swapping_buffers_ = false;
   back_buffer_ ^= 1;
 }
 
+scoped_refptr<gfx::GLSurface> SurfacelessGlRenderer::CreateSurface() {
+  return gfx::GLSurface::CreateSurfacelessViewGLSurface(widget_);
+}
+
 }  // namespace ui