Use smart pointers for class owned member variables

core/fpdfdoc/cpvt_wordinfo.cpp

Index: core/fpdfdoc/cpvt_wordinfo.cpp
diff --git a/core/fpdfdoc/cpvt_wordinfo.cpp b/core/fpdfdoc/cpvt_wordinfo.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..2303f300327a61daaa4ba0643d40b07e642edcc7
--- /dev/null
+++ b/core/fpdfdoc/cpvt_wordinfo.cpp
@@ -0,0 +1,54 @@
+// 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_wordinfo.h"
+
+CPVT_WordInfo::CPVT_WordInfo()
+    : Word(0),
+      nCharset(FXFONT_ANSI_CHARSET),
+      fWordX(0.0f),
+      fWordY(0.0f),
+      fWordTail(0.0f),
+      nFontIndex(-1) {}
+
+CPVT_WordInfo::CPVT_WordInfo(uint16_t word,
+                             int32_t charset,
+                             int32_t fontIndex,
+                             CPVT_WordProps* pProps)
+    : Word(word),
+      nCharset(charset),
+      fWordX(0.0f),
+      fWordY(0.0f),
+      fWordTail(0.0f),
+      nFontIndex(fontIndex) {}
+
+CPVT_WordInfo::CPVT_WordInfo(const CPVT_WordInfo& word)
+    : Word(0),
+      nCharset(FXFONT_ANSI_CHARSET),
+      fWordX(0.0f),
+      fWordY(0.0f),
+      fWordTail(0.0f),
+      nFontIndex(-1) {
+  operator=(word);
+}
+
+CPVT_WordInfo::~CPVT_WordInfo() {}
+
+void CPVT_WordInfo::operator=(const CPVT_WordInfo& word) {
+  if (this == &word)
+    return;
+
+  Word = word.Word;
+  nCharset = word.nCharset;
+  nFontIndex = word.nFontIndex;
+  fWordX = word.fWordX;
+  fWordY = word.fWordY;
+  fWordTail = word.fWordTail;
+  if (word.pWordProps)
+    pWordProps.reset(new CPVT_WordProps(*word.pWordProps));
+  else
+    pWordProps.reset();
+}