Use a direct include of strings headers in chrome/installer/, part 2.

chrome/installer/util/set_reg_value_work_item.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 "chrome/installer/util/set_reg_value_work_item.h"
 
 #include "base/logging.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "base/win/registry.h"
 #include "chrome/installer/util/logging_installer.h"
 
 SetRegValueWorkItem::~SetRegValueWorkItem() {
 }
 
 SetRegValueWorkItem::SetRegValueWorkItem(HKEY predefined_root,
                                          const std::wstring& key_path,
                                          const std::wstring& value_name,
                                          const std::wstring& value_data,
@@ skipping 123 matching lines @@
     result = key.WriteValue(value_name_.c_str(), previous_value,
                             static_cast<DWORD>(previous_value_.size()),
                             previous_type_);
     VLOG(1) << "rollback: restoring " << value_name_ << " error: " << result;
   } else {
     NOTREACHED();
   }
 
   status_ = VALUE_ROLL_BACK;
 }