Update {virtual,override,final} to follow C++11 style in sandbox, round 2.

sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions_unittests.cc

 // Copyright 2014 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 "sandbox/linux/seccomp-bpf-helpers/syscall_parameters_restrictions.h"
 
 #include <errno.h>
 #include <sched.h>
 #include <sys/resource.h>
 #include <sys/syscall.h>
@@ skipping 74 matching lines @@
 
 #if defined(OS_CHROMEOS)
 
 // A custom BPF tester delegate to run IsRunningOnChromeOS() before
 // the sandbox is enabled because we cannot run it with non-SFI BPF
 // sandbox enabled.
 class ClockSystemTesterDelegate : public sandbox::BPFTesterDelegate {
  public:
   ClockSystemTesterDelegate()
       : is_running_on_chromeos_(base::SysInfo::IsRunningOnChromeOS()) {}
-  virtual ~ClockSystemTesterDelegate() {}
+  ~ClockSystemTesterDelegate() override {}
 
-  virtual scoped_ptr<sandbox::bpf_dsl::Policy> GetSandboxBPFPolicy() override {
+  scoped_ptr<sandbox::bpf_dsl::Policy> GetSandboxBPFPolicy() override {
     return scoped_ptr<sandbox::bpf_dsl::Policy>(new RestrictClockIdPolicy());
   }
-  virtual void RunTestFunction() override {
+  void RunTestFunction() override {
     if (is_running_on_chromeos_) {
       CheckClock(base::TimeTicks::kClockSystemTrace);
     } else {
       struct timespec ts;
       // kClockSystemTrace is 11, which is CLOCK_THREAD_CPUTIME_ID of
       // the init process (pid=1). If kernel supports this feature,
       // this may succeed even if this is not running on Chrome OS. We
       // just check this clock_gettime call does not crash.
       clock_gettime(base::TimeTicks::kClockSystemTrace, &ts);
     }
@@ skipping 125 matching lines @@
                  DEATH_SEGV_MESSAGE(sandbox::GetErrorMessageContentForTests()),
                  RestrictPrlimit64Policy) {
   const pid_t kInitPID = 1;
   BPF_ASSERT_NE(kInitPID, getpid());
   sys_prlimit64(kInitPID, RLIMIT_AS, NULL, NULL);
 }
 
 }  // namespace
 
 }  // namespace sandbox