Remove custom memory manager

core/src/fpdfapi/fpdf_page/fpdf_page_colors.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 "../../../include/fpdfapi/fpdf_page.h"
 #include "../../../include/fpdfapi/fpdf_module.h"
 #include "../../../include/fxcodec/fx_codec.h"
 #include "pageint.h"
@@ skipping 1145 matching lines @@
 {
     if (m_Family == PDFCS_PATTERN) {
         return sizeof(PatternValue);
     }
     return m_nComponents * sizeof(FX_FLOAT);
 }
 FX_FLOAT* CPDF_ColorSpace::CreateBuf()
 {
     int size = GetBufSize();
     FX_BYTE* pBuf = FX_Alloc(FX_BYTE, size);
-    FXSYS_memset32(pBuf, 0, size);
     return (FX_FLOAT*)pBuf;
 }
 FX_BOOL CPDF_ColorSpace::sRGB() const
 {
     if (m_Family == PDFCS_DEVICERGB) {
         return TRUE;
     }
     if (m_Family != PDFCS_ICCBASED) {
         return FALSE;
     }
@@ skipping 217 matching lines @@
     PatternValue* pvalue = (PatternValue*)m_pBuffer;
     return pvalue->m_nComps ? pvalue->m_Comps : NULL;
 }
 FX_BOOL CPDF_Color::IsEqual(const CPDF_Color& other) const
 {
     if (m_pCS != other.m_pCS || m_pCS == NULL) {
         return FALSE;
     }
     return FXSYS_memcmp32(m_pBuffer, other.m_pBuffer, m_pCS->GetBufSize()) == 0;
 }