Only SolidBrush types are created, remove other brushes.

xfa/fde/fde_object.cpp

-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#include "xfa/fde/fde_object.h"
-
-IFDE_Pen* IFDE_Pen::Create() {
-  return new CFDE_Pen();
-}
-IFDE_Brush* IFDE_Brush::Create(int32_t iType) {
-  switch (iType) {
-    case FDE_BRUSHTYPE_Solid:
-      return new CFDE_SolidBrush;
-    case FDE_BRUSHTYPE_Hatch:
-      return new CFDE_HatchBrush;
-    case FDE_BRUSHTYPE_Texture:
-      return new CFDE_TextureBrush;
-    case FDE_BRUSHTYPE_LinearGradient:
-      return new CFDE_LinearBrush;
-    default:
-      return NULL;
-  }
-}