Use smart pointers for class owned member variables

core/fpdfdoc/cpvt_sectioninfo.cpp

Index: core/fpdfdoc/cpvt_sectioninfo.cpp
diff --git a/core/fpdfdoc/cpvt_sectioninfo.cpp b/core/fpdfdoc/cpvt_sectioninfo.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..eb5c1bb8092a2707f9b572fe6a4ffd4d7fb0be4e
--- /dev/null
+++ b/core/fpdfdoc/cpvt_sectioninfo.cpp
@@ -0,0 +1,31 @@
+// 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/fpdfdoc/cpvt_sectioninfo.h"
+
+CPVT_SectionInfo::CPVT_SectionInfo() : rcSection(), nTotalLine(0) {}
+
+CPVT_SectionInfo::~CPVT_SectionInfo() {}
+
+CPVT_SectionInfo::CPVT_SectionInfo(const CPVT_SectionInfo& other) {
+  operator=(other);
+}
+
+void CPVT_SectionInfo::operator=(const CPVT_SectionInfo& other) {
+  if (this == &other)
+    return;
+
+  rcSection = other.rcSection;
+  nTotalLine = other.nTotalLine;
+  if (other.pSecProps)
+    pSecProps.reset(new CPVT_SecProps(*other.pSecProps));
+  else
+    pSecProps.reset();
+  if (other.pWordProps)
+    pWordProps.reset(new CPVT_WordProps(*other.pWordProps));
+  else
+    pWordProps.reset();
+}