[Ozone-Demo] Update Surfaceless renderer

ui/ozone/demo/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/gl_renderer.h"
 
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_surface.h"
 
 namespace ui {
 
 GlRenderer::GlRenderer(gfx::AcceleratedWidget widget, const gfx::Size& size)
     : RendererBase(widget, size) {
 }
 
 GlRenderer::~GlRenderer() {
 }
 
 bool GlRenderer::Initialize() {
-  surface_ = gfx::GLSurface::CreateViewGLSurface(widget_);
+  surface_ = CreateSurface();
   if (!surface_.get()) {
     LOG(ERROR) << "Failed to create GL surface";
     return false;
   }
 
   context_ = gfx::GLContext::CreateGLContext(NULL, surface_.get(),
                                              gfx::PreferIntegratedGpu);
   if (!context_.get()) {
     LOG(ERROR) << "Failed to create GL context";
     return false;
@@ skipping 15 matching lines @@
   context_->MakeCurrent(surface_.get());
 
   glViewport(0, 0, size_.width(), size_.height());
   glClearColor(1 - fraction, fraction, 0.0, 1.0);
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
   if (!surface_->SwapBuffers())
     LOG(FATAL) << "Failed to swap buffers";
 }
 
+scoped_refptr<gfx::GLSurface> GlRenderer::CreateSurface() {
+  return gfx::GLSurface::CreateViewGLSurface(widget_);
+}
+
 }  // namespace ui