core/include/fdpfapi cleanup Part I.

core/include/fpdfapi/cpdf_null.h

Index: core/include/fpdfapi/cpdf_null.h
diff --git a/core/include/fpdfapi/cpdf_null.h b/core/include/fpdfapi/cpdf_null.h
deleted file mode 100644
index 654c2a40291dcf406bfbb5f1e19299b82cb95342..0000000000000000000000000000000000000000
--- a/core/include/fpdfapi/cpdf_null.h
+++ /dev/null
@@ -1,21 +0,0 @@
-// Copyright 2016 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
-
-#ifndef CORE_INCLUDE_FPDFAPI_CPDF_NULL_H_
-#define CORE_INCLUDE_FPDFAPI_CPDF_NULL_H_
-
-#include "core/include/fpdfapi/cpdf_object.h"
-
-class CPDF_Null : public CPDF_Object {
- public:
-  CPDF_Null();
-
-  // CPDF_Object.
-  Type GetType() const override;
-  CPDF_Object* Clone(FX_BOOL bDirect = FALSE) const override;
-};
-
-#endif  // CORE_INCLUDE_FPDFAPI_CPDF_NULL_H_