Cleanup XFA-Specific memory allocators.

xfa/fee/fde_txtedtbuf.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/fee/fde_txtedtbuf.h"
 
 #include <algorithm>
 
@@ skipping 352 matching lines @@
   ASSERT(nChunkSize);
   ASSERT(nDefChunkCount);
   if (m_pAllocator) {
     m_pAllocator->Release();
     m_pAllocator = NULL;
   }
   m_Chunks.RemoveAll();
   m_nChunkSize = nChunkSize;
   int32_t nChunkLength =
       sizeof(FDE_CHUNKHEADER) + (m_nChunkSize - 1) * sizeof(FX_WCHAR);
-  m_pAllocator =
-      FX_CreateAllocator(FX_ALLOCTYPE_Fixed, nDefChunkCount, nChunkLength);
-  ASSERT(m_pAllocator);
+  m_pAllocator = IFX_MemoryAllocator::Create(FX_ALLOCTYPE_Fixed, nDefChunkCount,
+                                             nChunkLength);
   FDE_CHUNKHEADER* lpChunkHeader =
       static_cast<FDE_CHUNKHEADER*>(m_pAllocator->Alloc(nChunkLength));
   ASSERT(lpChunkHeader);
   lpChunkHeader->nUsed = 0;
   m_Chunks.Add(lpChunkHeader);
   m_nTotal = 0;
 }
 int32_t CFDE_TxtEdtBuf::CP2Index(const FDE_CHUNKPLACE& cp) const {
   int32_t nTotal = cp.nCharIndex;
   int32_t i = 0;
@@ skipping 14 matching lines @@
   int32_t nCount = m_Chunks.GetSize();
   for (; i < nCount; i++) {
     nTotal += m_Chunks[i]->nUsed;
     if (nTotal > nIndex) {
       break;
     }
   }
   cp.nChunkIndex = i;
   cp.nCharIndex = m_Chunks[i]->nUsed - (nTotal - nIndex);
 }