Enable MSVC warning for unused locals.

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>
@@ skipping 11 matching lines @@
 namespace installer {
 
 BrowserDistribution::Type
     InstallationValidator::ChromeRules::distribution_type() const {
   return BrowserDistribution::CHROME_BROWSER;
 }
 
 void InstallationValidator::ChromeRules::AddUninstallSwitchExpectations(
     const ProductContext& ctx,
     SwitchExpectations* expectations) const {
-  const bool is_multi_install =
-      ctx.state.uninstall_command().HasSwitch(switches::kMultiInstall);
-
   // --chrome should be present for uninstall iff --multi-install.  This wasn't
   // the case in Chrome 10 (between r68996 and r72497), though, so consider it
   // optional.
 }
 
 void InstallationValidator::ChromeRules::AddRenameSwitchExpectations(
     const ProductContext& ctx,
     SwitchExpectations* expectations) const {
-  const bool is_multi_install =
-      ctx.state.uninstall_command().HasSwitch(switches::kMultiInstall);
-
   // --chrome should not be present for rename.  It was for a time, so we'll be
   // lenient so that mini_installer tests pass.
 
   // --chrome-frame should never be present.
   expectations->push_back(
       std::make_pair(std::string(switches::kChromeFrame), false));
 }
 
 bool InstallationValidator::ChromeRules::UsageStatsAllowed(
     const ProductContext& ctx) const {
@@ skipping 696 matching lines @@
                                                      InstallationType* type) {
   DCHECK(type);
   InstallationState machine_state;
 
   machine_state.Initialize();
 
   return ValidateInstallationTypeForState(machine_state, system_level, type);
 }
 
 }  // namespace installer