Get rid of NULLs in xfa/

xfa/fwl/theme/cfwl_formtp.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/fwl/theme/cfwl_formtp.h"
 
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fwl/core/cfwl_themebackground.h"
@@ skipping 13 matching lines @@
 const int kFormBigIconSize = 32;
 const int kFormSmallIconSize = 16;
 const uint32_t kFormTextColor = 0xFFFFFFFF;
 
 const int kButtonSize = 21;
 const int kButtonMargin = 5;
 const int kButtonSpan = 2;
 
 }  // namespace
 
-CFWL_FormTP::CFWL_FormTP() : m_pActiveBitmap(NULL), m_pDeactivebitmap(NULL) {
+CFWL_FormTP::CFWL_FormTP()
+    : m_pActiveBitmap(nullptr), m_pDeactivebitmap(nullptr) {
   m_pThemeData = new SBThemeData;
   SetThemeData(0);
   m_rtDisLBorder.Reset();
   m_rtDisRBorder.Reset();
   m_rtDisBBorder.Reset();
   m_rtDisCaption.Reset();
 }
 
 CFWL_FormTP::~CFWL_FormTP() {
   delete m_pThemeData;
@@ skipping 820 matching lines @@
     path.Clear();
     path.AddRectangle(0, 5, 1, 15);
     DrawAxialShading(&gs, 0, 5, 0, 20, m_pThemeData->clrHeadBK[1][1],
                      m_pThemeData->clrHeadBK[1][2], &path);
     path.Clear();
     path.AddRectangle(0, 20, 1, kCYCaption - 19);
     DrawAxialShading(&gs, 0, 20, 0, kCYCaption, m_pThemeData->clrHeadBK[1][2],
                      m_pThemeData->clrHeadBK[1][3], &path);
   }
 }