Run clang-modernize -use-nullptr over src/extensions/.

extensions/common/manifest_handlers/options_page_info.cc

 // Copyright 2014 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 "extensions/common/manifest_handlers/options_page_info.h"
 
 #include "base/files/file_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/utf_string_conversions.h"
 #include "extensions/common/api/extensions_manifest_types.h"
@@ skipping 163 matching lines @@
   const Manifest* manifest = extension->manifest();
 
   std::string options_page_string;
   if (manifest->HasPath(keys::kOptionsPage) &&
       !manifest->GetString(keys::kOptionsPage, &options_page_string)) {
     *error = ErrorUtils::FormatErrorMessageUTF16(errors::kInvalidOptionsPage,
                                                  keys::kOptionsPage);
     return false;
   }
 
-  const base::Value* options_ui_value = NULL;
+  const base::Value* options_ui_value = nullptr;
   ignore_result(manifest->Get(keys::kOptionsUI, &options_ui_value));
 
   scoped_ptr<OptionsPageInfo> info =
       OptionsPageInfo::Create(extension,
                               options_ui_value,
                               options_page_string,
                               &install_warnings,
                               error);
   if (!info)
     return false;
@@ skipping 22 matching lines @@
   }
   return true;
 }
 
 const std::vector<std::string> OptionsPageManifestHandler::Keys() const {
   static const char* keys[] = {keys::kOptionsPage, keys::kOptionsUI};
   return std::vector<std::string>(keys, keys + arraysize(keys));
 }
 
 }  // namespace extensions