ozone: Introduce ClientPixmap and ClientPixmapFactory for non-GPU processes.

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 41 matching lines @@
     gfx::Size size,
     BufferFormat format,
     BufferUsage usage) {
   return NULL;
 }
 
 bool SurfaceFactoryOzone::CanShowPrimaryPlaneAsOverlay() {
   return false;
 }
 
-bool SurfaceFactoryOzone::CanCreateNativePixmap(BufferUsage usage) {
-  return false;
-}
-
 }  // namespace ui