Rewrite scoped_ptr<T>(NULL) to use the default ctor in chrome/.

chrome/browser/ui/webui/chromeos/system_info_ui.cc

 // Copyright (c) 2012 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 "chrome/browser/ui/webui/chromeos/system_info_ui.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 79 matching lines @@
  private:
   DISALLOW_COPY_AND_ASSIGN(SystemInfoHandler);
 };
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // SystemInfoUIHTMLSource
 //
 ////////////////////////////////////////////////////////////////////////////////
 
-SystemInfoUIHTMLSource::SystemInfoUIHTMLSource()
-    : response_(NULL),
-      weak_ptr_factory_(this) {
-}
+SystemInfoUIHTMLSource::SystemInfoUIHTMLSource() : weak_ptr_factory_(this) {}
 
 std::string SystemInfoUIHTMLSource::GetSource() const {
   return chrome::kChromeUISystemInfoHost;
 }
 
 void SystemInfoUIHTMLSource::StartDataRequest(
     const std::string& path,
     int render_process_id,
     int render_view_id,
     const content::URLDataSource::GotDataCallback& callback) {
@@ skipping 74 matching lines @@
   SystemInfoHandler* handler = new SystemInfoHandler();
   web_ui->AddMessageHandler(handler);
   SystemInfoUIHTMLSource* html_source = new SystemInfoUIHTMLSource();
 
   // Set up the chrome://system/ source.
   Profile* profile = Profile::FromWebUI(web_ui);
   content::URLDataSource::Add(profile, html_source);
 }
 
 }  // namespace chromeos