Add ability to query and allocate zero copy buffers.

ui/ozone/public/surface_factory_ozone.cc

 // Copyright (c) 2013 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/public/surface_factory_ozone.h"
 
 #include <stdlib.h>
 
 #include "base/command_line.h"
 #include "ui/ozone/public/native_pixmap.h"
@@ skipping 48 matching lines @@
   return desired_attributes;
 }
 
 ui::OverlayCandidatesOzone* SurfaceFactoryOzone::GetOverlayCandidates(
     gfx::AcceleratedWidget w) {
   return NULL;
 }
 
 scoped_refptr<ui::NativePixmap> SurfaceFactoryOzone::CreateNativePixmap(
     gfx::Size size,
-    BufferFormat format) {
+    BufferFormat format,
+    BufferUsage usage) {
   return NULL;
 }
 
 bool SurfaceFactoryOzone::ScheduleOverlayPlane(
     gfx::AcceleratedWidget widget,
     int plane_z_order,
     gfx::OverlayTransform plane_transform,
     scoped_refptr<NativePixmap> buffer,
     const gfx::Rect& display_bounds,
     const gfx::RectF& crop_rect) {
   return false;
 }
 
 bool SurfaceFactoryOzone::CanShowPrimaryPlaneAsOverlay() {
   return false;
 }
+
+bool SurfaceFactoryOzone::CanCreateNativePixmap(BufferUsage usage) {
+  return false;
+}
+
 }  // namespace ui