Fixed all unused-variable Clang warnings on Windows.

base/process/process_util_unittest.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.
 
 #define _CRT_SECURE_NO_WARNINGS
 
 #include <limits>
 
 #include "base/command_line.h"
 #include "base/debug/alias.h"
@@ skipping 46 matching lines @@
 #if defined(OS_MACOSX)
 #include <mach/vm_param.h>
 #include <malloc/malloc.h>
 #include "base/mac/mac_util.h"
 #endif
 
 using base::FilePath;
 
 namespace {
 
+const char kSignalFileSlow[] = "SlowChildProcess.die";
+const char kSignalFileKill[] = "KilledChildProcess.die";
+
+#if defined(OS_POSIX)
+const char kSignalFileTerm[] = "TerminatedChildProcess.die";
+
 #if defined(OS_ANDROID)
 const char kShellPath[] = "/system/bin/sh";
 const char kPosixShell[] = "sh";
 #else
 const char kShellPath[] = "/bin/sh";
 const char kPosixShell[] = "bash";
 #endif
-
-const char kSignalFileSlow[] = "SlowChildProcess.die";
-const char kSignalFileKill[] = "KilledChildProcess.die";
-
-#if defined(OS_POSIX)
-const char kSignalFileTerm[] = "TerminatedChildProcess.die";
-#endif
+#endif  // defined(OS_POSIX)
 
 #if defined(OS_WIN)
 const int kExpectedStillRunningExitCode = 0x102;
 const int kExpectedKilledExitCode = 1;
 #else
 const int kExpectedStillRunningExitCode = 0;
 #endif
 
 // Sleeps until file filename is created.
 void WaitToDie(const char* filename) {
@@ skipping 1014 matching lines @@
   options.current_directory = base::FilePath("/dev/null");
 
   base::Process process(SpawnChildWithOptions("SimpleChildProcess", options));
   ASSERT_TRUE(process.IsValid());
 
   int exit_code = kSuccess;
   EXPECT_TRUE(process.WaitForExit(&exit_code));
   EXPECT_NE(kSuccess, exit_code);
 }
 #endif