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

xfa/fxfa/parser/xfa_object_imp.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 "xfa/fxfa/parser/xfa_object.h"
 
 #include "core/fxcrt/include/fx_ext.h"
 #include "xfa/fde/xml/fde_xml_imp.h"
@@ skipping 4066 matching lines @@
   return FALSE;
 }
 FX_BOOL CXFA_Node::TryCData(XFA_ATTRIBUTE eAttr,
                             CFX_WideStringC& wsValue,
                             FX_BOOL bUseDefault,
                             FX_BOOL bProto) {
   void* pKey = XFA_GetMapKey_Element(GetClassID(), eAttr);
   if (eAttr == XFA_ATTRIBUTE_Value) {
     CFX_WideString* pStr = (CFX_WideString*)GetUserData(pKey, bProto);
     if (pStr) {
-      wsValue = *pStr;
+      wsValue = pStr->AsStringC();
       return TRUE;
     }
   } else {
     if (GetMapModuleString(pKey, wsValue)) {
       return TRUE;
     }
   }
   if (!bUseDefault) {
     return FALSE;
   }
@@ skipping 1297 matching lines @@
   return m_pAttachNode->InsertChild(pNewNode, pBeforeNode);
 }
 FX_BOOL CXFA_AttachNodeList::Remove(CXFA_Node* pNode) {
   return m_pAttachNode->RemoveChild(pNode);
 }
 CXFA_Node* CXFA_AttachNodeList::Item(int32_t iIndex) {
   return m_pAttachNode->GetChild(
       iIndex, XFA_ELEMENT_UNKNOWN,
       m_pAttachNode->GetClassID() == XFA_ELEMENT_Subform);
 }