Revert of base: Remove using:: declaration from version.h header.

chrome/installer/util/google_chrome_distribution.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.
 //
 // This file defines specific implementation of BrowserDistribution class for
 // Google Chrome.
 
 #include "chrome/installer/util/google_chrome_distribution.h"
 
 #include <windows.h>
@@ skipping 52 matching lines @@
                           scoped_ptr<AppRegistrationData>(
                               new UpdatingAppRegistrationData(kChromeGuid))) {
 }
 
 GoogleChromeDistribution::GoogleChromeDistribution(
     scoped_ptr<AppRegistrationData> app_reg_data)
     : BrowserDistribution(CHROME_BROWSER, app_reg_data.Pass()) {
 }
 
 void GoogleChromeDistribution::DoPostUninstallOperations(
-    const base::Version& version,
+    const Version& version,
     const base::FilePath& local_data_path,
     const base::string16& distribution_data) {
   // Send the Chrome version and OS version as params to the form.
   // It would be nice to send the locale, too, but I don't see an
   // easy way to get that in the existing code. It's something we
   // can add later, if needed.
   // We depend on installed_version.GetString() not having spaces or other
   // characters that need escaping: 0.2.13.4. Should that change, we will
   // need to escape the string before using it in a URL.
   const base::string16 kVersionParam = L"crversion";
@@ skipping 181 matching lines @@
       GetAppGuid());
 }
 
 bool GoogleChromeDistribution::ShouldSetExperimentLabels() {
   return true;
 }
 
 bool GoogleChromeDistribution::HasUserExperiments() {
   return true;
 }