Remove a few more char* members from structs/classes.

core/fpdfdoc/doc_form.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 <vector>
 
 #include "core/fpdfapi/fpdf_font/include/cpdf_fontencoding.h"
 #include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
@@ skipping 30 matching lines @@
   CFX_ByteString csTemp = csBValue.Left(2);
   if (csTemp == "\xFF\xFE" || csTemp == "\xFE\xFF")
     return PDF_DecodeText(csBValue);
   return CFX_WideString::FromLocal(csBValue.AsStringC());
 }
 
 }  // namespace
 
 class CFieldNameExtractor {
  public:
-  explicit CFieldNameExtractor(const CFX_WideString& full_name) {
-    m_pStart = full_name.c_str();
-    m_pEnd = m_pStart + full_name.GetLength();
-    m_pCur = m_pStart;
+  explicit CFieldNameExtractor(const CFX_WideString& full_name)
+      : m_FullName(full_name) {
+    m_pCur = m_FullName.c_str();
+    m_pEnd = m_pCur + m_FullName.GetLength();
   }
+
   void GetNext(const FX_WCHAR*& pSubName, FX_STRSIZE& size) {
     pSubName = m_pCur;
     while (m_pCur < m_pEnd && m_pCur[0] != L'.') {
       m_pCur++;
     }
     size = (FX_STRSIZE)(m_pCur - pSubName);
     if (m_pCur < m_pEnd && m_pCur[0] == L'.') {
       m_pCur++;
     }
   }
 
  protected:
-  const FX_WCHAR* m_pStart;
+  CFX_WideString m_FullName;
+  const FX_WCHAR* m_pCur;
   const FX_WCHAR* m_pEnd;
-  const FX_WCHAR* m_pCur;
 };
+
 class CFieldTree {
  public:
   struct _Node {
     _Node* parent;
     CFX_ArrayTemplate<_Node*> children;
     CFX_WideString short_name;
     CPDF_FormField* field_ptr;
     int CountFields(int nLevel = 0) {
       if (nLevel > nMaxRecursion) {
         return 0;
@@ skipping 1119 matching lines @@
     FDF_ImportField(pField, L"", bNotify);
   }
   if (bNotify && m_pFormNotify) {
     m_pFormNotify->AfterFormImportData(this);
   }
   return TRUE;
 }
 void CPDF_InterForm::SetFormNotify(const CPDF_FormNotify* pNotify) {
   m_pFormNotify = (CPDF_FormNotify*)pNotify;
 }