Split fpdf_parser_objects.cpp into per-class .cpp/.h files.

core/src/fpdfapi/fpdf_parser/cpdf_null.cpp

Index: core/src/fpdfapi/fpdf_parser/cpdf_null.cpp
diff --git a/core/src/fpdfapi/fpdf_parser/cpdf_null.cpp b/core/src/fpdfapi/fpdf_parser/cpdf_null.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..c18449d08f7f92161289768633309b650fbdc732
--- /dev/null
+++ b/core/src/fpdfapi/fpdf_parser/cpdf_null.cpp
@@ -0,0 +1,17 @@
+// 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
+
+#include "core/include/fpdfapi/cpdf_null.h"
+
+CPDF_Null::CPDF_Null() {}
+
+CPDF_Object::Type CPDF_Null::GetType() const {
+  return NULLOBJ;
+}
+
+CPDF_Object* CPDF_Null::Clone(FX_BOOL bDirect) const {
+  return new CPDF_Null;
+}