Fixed all unused-variable Clang warnings on Windows.

sandbox/win/src/process_mitigations_test.cc

 // 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 "base/strings/stringprintf.h"
 #include "base/win/scoped_handle.h"
 
 #include "base/win/windows_version.h"
 #include "sandbox/win/src/nt_internals.h"
 #include "sandbox/win/src/process_mitigations.h"
@@ skipping 147 matching lines @@
       return SBOX_TEST_NOT_FOUND;
 
     ULONG size = 0;
     ULONG dep_flags = 0;
     if (!SUCCEEDED(query_information_process(::GetCurrentProcess(),
                                              ProcessExecuteFlags, &dep_flags,
                                              sizeof(dep_flags), &size))) {
       return SBOX_TEST_THIRD_ERROR;
     }
 
-    static const int MEM_EXECUTE_OPTION_ENABLE = 1;
     static const int MEM_EXECUTE_OPTION_DISABLE = 2;
-    static const int MEM_EXECUTE_OPTION_ATL7_THUNK_EMULATION = 4;
     static const int MEM_EXECUTE_OPTION_PERMANENT = 8;
     dep_flags &= 0xff;
 
     if (dep_flags != (MEM_EXECUTE_OPTION_DISABLE |
                       MEM_EXECUTE_OPTION_PERMANENT)) {
       return SBOX_TEST_FOURTH_ERROR;
     }
   }
 
   return SBOX_TEST_SUCCEEDED;
@@ skipping 58 matching lines @@
   EXPECT_EQ(policy->SetProcessMitigations(MITIGATION_WIN32K_DISABLE),
             SBOX_ALL_OK);
   EXPECT_EQ(policy->AddRule(sandbox::TargetPolicy::SUBSYS_WIN32K_LOCKDOWN,
                             sandbox::TargetPolicy::FAKE_USER_GDI_INIT, NULL),
             sandbox::SBOX_ALL_OK);
   EXPECT_EQ(SBOX_TEST_SUCCEEDED, runner.RunTest(L"CheckWin8Lockdown"));
 }
 
 }  // namespace sandbox