Add namespace and re-arrange PDFium's local copy of chromium /base.

fpdfsdk/src/fpdfview.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/fsdk_define.h"
 #include "../include/fsdk_mgr.h"
 #include "../include/fpdfview.h"
 #include "../include/fsdk_rendercontext.h"
 #include "../include/fpdf_progressive.h"
 #include "../include/fpdf_ext.h"
 #include "../../../core/src/fxcrt/fx_safe_types.h"
-#include "../../third_party/numerics/safe_conversions_impl.h"
+#include "../../third_party/base/numerics/safe_conversions_impl.h"
 
 CPDF_CustomAccess::CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess)
 {
         if (pFileAccess)
                 m_FileAccess = *pFileAccess;
 }
 
 FX_BOOL CPDF_CustomAccess::ReadBlock(void* buffer, FX_FILESIZE offset, size_t size)
 {
     if (offset < 0) {
         return FALSE;
     }
-    FX_SAFE_FILESIZE newPos = base::checked_cast<FX_FILESIZE, size_t>(size);
+    FX_SAFE_FILESIZE newPos = pdfium::base::checked_cast<FX_FILESIZE, size_t>(size);
     newPos += offset;
     if (!newPos.IsValid() || newPos.ValueOrDie() > m_FileAccess.m_FileLen) {
         return FALSE;
     }
     return m_FileAccess.m_GetBlock(m_FileAccess.m_Param, offset,(FX_LPBYTE) buffer, size);
 }
 
 //0 bit: FPDF_POLICY_MACHINETIME_ACCESS
 static FX_DWORD foxit_sandbox_policy = 0xFFFFFFFF;
 
@@ skipping 165 matching lines @@
 public:
         CMemFile(FX_BYTE* pBuf, FX_FILESIZE size):m_pBuf(pBuf),m_size(size) {}
 
         virtual void                    Release() {delete this;}
         virtual FX_FILESIZE             GetSize() {return m_size;}
         virtual FX_BOOL                 ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) 
         {
             if (offset < 0) {
                 return FALSE;
             }
-            FX_SAFE_FILESIZE newPos = base::checked_cast<FX_FILESIZE, size_t>(size);
+            FX_SAFE_FILESIZE newPos = pdfium::base::checked_cast<FX_FILESIZE, size_t>(size);
             newPos += offset;
             if (!newPos.IsValid() || newPos.ValueOrDie() > (FX_DWORD)m_size) {
                 return FALSE;
             }
             FXSYS_memcpy(buffer, m_pBuf+offset, size);
             return TRUE;
         }
 private:
         FX_BYTE* m_pBuf;
         FX_FILESIZE m_size;
@@ skipping 636 matching lines @@
     if (!buffer) {
         buflen = len;
     } else if (buflen >= len) {
         memcpy(buffer, utf16Name.c_str(), len);
         buflen = len;
     } else {
         buflen = -1;
     }
     return (FPDF_DEST)pDestObj;
 }