Change namespace from ui to gfx for NativePixmap related code

gpu/ipc/common/gpu_memory_buffer_support.cc

 // Copyright 2016 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 "gpu/ipc/common/gpu_memory_buffer_support.h"
 
 #include "base/logging.h"
 #include "build/build_config.h"
 
 #if defined(USE_OZONE)
@@ skipping 29 matching lines @@
       return format == gfx::BufferFormat::R_8 ||
              format == gfx::BufferFormat::BGRA_8888 ||
              format == gfx::BufferFormat::UYVY_422 ||
              format == gfx::BufferFormat::YUV_420_BIPLANAR;
   }
   NOTREACHED();
   return false;
 #endif
 
 #if defined(USE_OZONE)
-  if (!ui::ClientNativePixmapFactory::GetInstance()) {
+  if (!gfx::ClientNativePixmapFactory::GetInstance()) {
     // unittests don't have to set ClientNativePixmapFactory.
     return false;
   }
-  return ui::ClientNativePixmapFactory::GetInstance()->IsConfigurationSupported(
-      format, usage);
+  return gfx::ClientNativePixmapFactory::GetInstance()
+      ->IsConfigurationSupported(format, usage);
 #endif
 
   NOTREACHED();
   return false;
 }
 
 }  // namespace gpu