Misc. cleanup, primarily removing unused locals.

chrome/installer/util/installer_state.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.
 
 #include "chrome/installer/util/installer_state.h"
 
 #include <algorithm>
 #include <functional>
 #include <utility>
 
@@ skipping 612 matching lines @@
   DCHECK_NE(file_bits, 0U);
   DCHECK_LT(file_bits, 1U << NUM_BINARIES);
   COMPILE_ASSERT(CHROME_DLL == 1, no_youre_out_of_order);
   COMPILE_ASSERT(CHROME_FRAME_DLL == 2, no_youre_out_of_order);
   COMPILE_ASSERT(CHROME_FRAME_HELPER_DLL == 4, no_youre_out_of_order);
   COMPILE_ASSERT(CHROME_FRAME_HELPER_EXE == 8, no_youre_out_of_order);
 
   // Check only for the current version (i.e., the version we are upgrading
   // _from_). Later versions from pending in-use updates need not be checked
   // since the current version is guaranteed to be in use if any such are.
-  bool in_use = false;
   scoped_ptr<Version> current_version(GetCurrentVersion(machine_state));
   if (!current_version)
     return false;
   base::FilePath directory(
       target_path().AppendASCII(current_version->GetString()));
   for (int i = 0; i < NUM_BINARIES; ++i) {
     if (!(file_bits & (1U << i)))
       continue;
     base::FilePath file(directory.Append(kBinaryFileNames[i]));
     if (base::PathExists(file) && IsFileInUse(file))
@@ skipping 183 matching lines @@
   }
   if (!install_list->Do())
     LOG(ERROR) << "Failed to record installer error information in registry.";
 }
 
 bool InstallerState::RequiresActiveSetup() const {
   return system_install() && FindProduct(BrowserDistribution::CHROME_BROWSER);
 }
 
 }  // namespace installer