Update all users of base::Version to explicitly specify the namespace, and clean up the header.

chrome/installer/util/installation_validator.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.
 
 // Implementation of the installation validator.
 
 #include "chrome/installer/util/installation_validator.h"
 
 #include <algorithm>
 #include <set>
 #include <string>
 
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
-#include "base/version.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/installer/util/browser_distribution.h"
 #include "chrome/installer/util/google_update_constants.h"
 #include "chrome/installer/util/helper.h"
 #include "chrome/installer/util/installation_state.h"
 
 namespace installer {
 
 BrowserDistribution::Type
     InstallationValidator::ChromeRules::distribution_type() const {
@@ skipping 787 matching lines @@
                                                      InstallationType* type) {
   DCHECK(type);
   InstallationState machine_state;
 
   machine_state.Initialize();
 
   return ValidateInstallationTypeForState(machine_state, system_level, type);
 }
 
 }  // namespace installer