ozone: gbm: Fix missing OVERRIDE

ui/ozone/platform/dri/gbm_surface_factory.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/platform/dri/gbm_surface_factory.h"
 
 #include <gbm.h>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 10 matching lines @@
 #include "ui/ozone/public/surface_ozone_egl.h"
 
 namespace ui {
 namespace {
 
 class SingleOverlay : public OverlayCandidatesOzone {
  public:
   SingleOverlay() {}
   virtual ~SingleOverlay() {}
 
-  virtual void CheckOverlaySupport(OverlaySurfaceCandidateList* candidates) {
+  virtual void CheckOverlaySupport(
+      OverlaySurfaceCandidateList* candidates) OVERRIDE {
     if (candidates->size() == 2) {
       OverlayCandidatesOzone::OverlaySurfaceCandidate* first =
           &(*candidates)[0];
       OverlayCandidatesOzone::OverlaySurfaceCandidate* second =
           &(*candidates)[1];
       OverlayCandidatesOzone::OverlaySurfaceCandidate* overlay;
       if (first->plane_z_order == 0) {
         overlay = second;
       } else if (second->plane_z_order == 0) {
         overlay = first;
@@ skipping 180 matching lines @@
     scoped_ptr<DriWindowDelegate> delegate(
         new DriWindowDelegateImpl(widget, screen_manager_));
     delegate->Initialize();
     window_manager_->AddWindowDelegate(widget, delegate.Pass());
   }
 
   return window_manager_->GetWindowDelegate(widget);
 }
 
 }  // namespace ui