first-run: Refactor Upgrade class into a common upgrade_util API.

chrome/browser/first_run/upgrade.cc

Index: chrome/browser/first_run/upgrade.cc
diff --git a/chrome/browser/first_run/upgrade.cc b/chrome/browser/first_run/upgrade.cc
deleted file mode 100644
index 778f491b819a8ad0deab2fe8baf71484476c74b4..0000000000000000000000000000000000000000
--- a/chrome/browser/first_run/upgrade.cc
+++ /dev/null
@@ -1,21 +0,0 @@
-// 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/browser/first_run/upgrade.h"
-
-#include "base/command_line.h"
-#include "base/logging.h"
-
-// static
-void Upgrade::RelaunchChromeBrowserWithNewCommandLineIfNeeded() {
-  if (new_command_line_) {
-    if (!RelaunchChromeBrowser(*new_command_line_)) {
-      DLOG(ERROR) << "Launching a new instance of the browser failed.";
-    } else {
-      DLOG(WARNING) << "Launched a new instance of the browser.";
-    }
-    delete new_command_line_;
-    new_command_line_ = NULL;
-  }
-}