Remove some fx_dib functions with unused parameters.

core/fxge/agg/fx_agg_driver.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 "core/fxge/agg/fx_agg_driver.h"
 
 #include <algorithm>
 
@@ skipping 1711 matching lines @@
   }
 
   FX_BOOL bRet = TRUE;
   left = std::min(left, 0);
   top = std::min(top, 0);
   if (m_bRgbByteOrder) {
     RgbByteOrderTransferBitmap(pBitmap, 0, 0, rect.Width(), rect.Height(),
                                pBack, left, top);
   } else {
     bRet = pBitmap->TransferBitmap(0, 0, rect.Width(), rect.Height(), pBack,
-                                   left, top, nullptr);
+                                   left, top);
   }
   delete pBack;
   return bRet;
 }
 
 CFX_DIBitmap* CFX_AggDeviceDriver::GetBackDrop() {
   return m_pOriDevice;
 }
 
 FX_BOOL CFX_AggDeviceDriver::SetDIBits(const CFX_DIBSource* pBitmap,
@@ skipping 115 matching lines @@
   SetDeviceDriver(pDriver);
   return true;
 }
 
 CFX_FxgeDevice::~CFX_FxgeDevice() {
   if (m_bOwnedBitmap) {
     delete GetBitmap();
   }
 }
 #endif