C++11 declares a type safe null pointer

content/common/font_list_win.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/common/font_list.h"
 
 #include <windows.h>
 
 #include <set>
 
@@ skipping 18 matching lines @@
   return 1;
 }
 
 scoped_ptr<base::ListValue> GetFontList_SlowBlocking() {
   std::set<base::string16> font_names;
 
   LOGFONTW logfont;
   memset(&logfont, 0, sizeof(logfont));
   logfont.lfCharSet = DEFAULT_CHARSET;
 
-  HDC hdc = ::GetDC(NULL);
+  HDC hdc = ::GetDC(nullptr);
   ::EnumFontFamiliesExW(hdc, &logfont, (FONTENUMPROCW)&EnumFontFamExProc,
                         (LPARAM)&font_names, 0);
-  ::ReleaseDC(NULL, hdc);
+  ::ReleaseDC(nullptr, hdc);
 
   scoped_ptr<base::ListValue> font_list(new base::ListValue);
   std::set<base::string16>::iterator iter;
   for (iter = font_names.begin(); iter != font_names.end(); ++iter) {
     base::ListValue* font_item = new base::ListValue();
     font_item->Append(new base::StringValue(*iter));
     font_item->Append(new base::StringValue(*iter));
     font_list->Append(font_item);
   }
   return font_list.Pass();
 }
 
 }  // namespace content