Convert //tools to use std::unique_ptr

extensions/browser/api/system_cpu/cpu_info_provider_win.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/browser/api/system_cpu/cpu_info_provider.h"
 
 #include <windows.h>
 #include <winternl.h>
 
+#include "base/memory/scoped_ptr.h"
 #include "base/sys_info.h"
 
 namespace extensions {
 
 namespace {
 
 const wchar_t kNtdll[] = L"ntdll.dll";
 const char kNtQuerySystemInformationName[] = "NtQuerySystemInformation";
 
 // See MSDN about NtQuerySystemInformation definition.
@@ skipping 47 matching lines @@
     infos->at(i).usage.kernel = kernel - idle;
     infos->at(i).usage.user = user;
     infos->at(i).usage.idle = idle;
     infos->at(i).usage.total = kernel + user;
   }
 
   return true;
 }
 
 }  // namespace extensions