Revert 69511 - Make Graphics3D::SwapBuffers take a completion callback...

ppapi/cpp/dev/graphics_3d_dev.cc

 // Copyright (c) 2010 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 "ppapi/cpp/dev/graphics_3d_dev.h"
 
 #include "ppapi/cpp/common.h"
 #include "ppapi/cpp/instance.h"
 #include "ppapi/cpp/resource.h"
 #include "ppapi/cpp/module.h"
@@ skipping 101 matching lines @@
                                                         config, share_context,
                                                         attrib_list));
   }
 }
 
 bool Graphics3D_Dev::MakeCurrent() const {
   InitializeOpenGLCInterface();
   return graphics_3d_f && graphics_3d_f->MakeCurent(pp_resource());
 }
 
-bool Graphics3D_Dev::SwapBuffers(const CompletionCallback& cc) const {
-  return graphics_3d_f && graphics_3d_f->SwapBuffers(
-      pp_resource(), cc.pp_completion_callback());
+bool Graphics3D_Dev::SwapBuffers() const {
+  return graphics_3d_f && graphics_3d_f->SwapBuffers(pp_resource());
 }
 
 }  // namespace pp