Replace calls to deprecated CFX_{Wide,Byte}String::Empty()

xfa/fxfa/parser/xfa_script_resolveprocessor.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_script_resolveprocessor.h"
 
 #include "core/fxcrt/include/fx_ext.h"
 #include "xfa/fxfa/fm2js/xfa_fm2jsapi.h"
@@ skipping 244 matching lines @@
     pChild = pChild->GetNodeItem(XFA_NODEITEM_NextSibling);
   }
   if ((dwStyles & XFA_RESOLVENODE_Properties) && pVariablesNode) {
     uint32_t uPropHash = pVariablesNode->GetClassHashCode();
     if (uPropHash == uNameHash) {
       nodes.Add(pVariablesNode);
     } else {
       rndFind.m_CurNode = pVariablesNode;
       XFA_ResolveNodes_SetStylesForChild(dwStyles, rndFind);
       CFX_WideString wsSaveCondition = rndFind.m_wsCondition;
-      rndFind.m_wsCondition.Empty();
+      rndFind.m_wsCondition.clear();
       XFA_ResolveNodes_Normal(rndFind);
       rndFind.m_wsCondition = wsSaveCondition;
       if (rndFind.m_Nodes.GetSize() > 0) {
         nodes.Append(rndFind.m_Nodes);
         rndFind.m_Nodes.RemoveAll();
       }
     }
     if (nodes.GetSize() > nNum) {
       XFA_ResolveNode_FilterCondition(rnd, wsCondition);
       if (nodes.GetSize() > 0) {
@@ skipping 17 matching lines @@
         nodes.Add(child);
       }
       if (m_pNodeHelper->XFA_NodeIsTransparent(child) &&
           child->GetClassID() != XFA_ELEMENT_PageSet) {
         if (!bSetFlag) {
           XFA_ResolveNodes_SetStylesForChild(dwStyles, rndFind);
           bSetFlag = TRUE;
         }
         rndFind.m_CurNode = child;
         CFX_WideString wsSaveCondition = rndFind.m_wsCondition;
-        rndFind.m_wsCondition.Empty();
+        rndFind.m_wsCondition.clear();
         XFA_ResolveNodes_Normal(rndFind);
         rndFind.m_wsCondition = wsSaveCondition;
         if (rndFind.m_Nodes.GetSize() > 0) {
           nodes.Append(rndFind.m_Nodes);
           rndFind.m_Nodes.RemoveAll();
         }
       }
     }
     if (nodes.GetSize() > nNum) {
       if (!(dwStyles & XFA_RESOLVENODE_ALL)) {
@@ skipping 123 matching lines @@
           bInnerSearch = TRUE;
         }
       } else {
         if (m_pNodeHelper->XFA_NodeIsTransparent(child)) {
           bInnerSearch = TRUE;
         }
       }
       if (bInnerSearch) {
         rndFind.m_CurNode = child;
         CFX_WideString wsOriginCondition = rndFind.m_wsCondition;
-        rndFind.m_wsCondition.Empty();
+        rndFind.m_wsCondition.clear();
         uint32_t dwOriginStyle = rndFind.m_dwStyles;
         rndFind.m_dwStyles = dwOriginStyle | XFA_RESOLVENODE_ALL;
         XFA_ResolveNodes_Normal(rndFind);
         rndFind.m_dwStyles = dwOriginStyle;
         rndFind.m_wsCondition = wsOriginCondition;
         if (rndFind.m_Nodes.GetSize() > 0) {
           nodes.Append(rndFind.m_Nodes);
           rndFind.m_Nodes.RemoveAll();
         }
       }
@@ skipping 362 matching lines @@
   if (m_pNodeHelper->XFA_CreateNode_ForCondition(wsNextCondition)) {
     if (m_pNodeHelper->m_eLastCreateType == XFA_ELEMENT_DataGroup) {
       iIndex = 0;
     } else {
       iIndex = iCount - 1;
     }
   } else {
     iIndex = iCount - 1;
   }
 }