Standardize usage of virtual/override/final specifiers.

content/common/sandbox_linux/sandbox_bpf_base_policy_linux.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_COMMON_SANDBOX_LINUX_SANDBOX_BPF_BASE_POLICY_LINUX_H_
 #define CONTENT_COMMON_SANDBOX_LINUX_SANDBOX_BPF_BASE_POLICY_LINUX_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "sandbox/linux/bpf_dsl/bpf_dsl_forward.h"
 #include "sandbox/linux/bpf_dsl/policy.h"
 #include "sandbox/linux/seccomp-bpf-helpers/baseline_policy.h"
 
 namespace content {
 
 // The "baseline" BPF policy for content/. Any content/ seccomp-bpf policy
 // should inherit from it.
 // It implements the main Policy interface. Due to its nature
 // as a "kernel attack surface reduction" layer, it's implementation-defined.
 class SandboxBPFBasePolicy : public sandbox::bpf_dsl::Policy {
  public:
   SandboxBPFBasePolicy();
-  virtual ~SandboxBPFBasePolicy();
+  ~SandboxBPFBasePolicy() override;
 
-  virtual sandbox::bpf_dsl::ResultExpr EvaluateSyscall(
+  sandbox::bpf_dsl::ResultExpr EvaluateSyscall(
       int system_call_number) const override;
-  virtual sandbox::bpf_dsl::ResultExpr InvalidSyscall() const override;
+  sandbox::bpf_dsl::ResultExpr InvalidSyscall() const override;
 
   // A policy can implement this hook to run code right before the policy
   // is passed to the BPF compiler and the sandbox is engaged.
   // If PreSandboxHook() returns true, the sandbox is guaranteed to be
   // engaged afterwards.
   // This will be used when enabling the sandbox though
   // SandboxSeccompBPF::StartSandbox().
   virtual bool PreSandboxHook();
 
   // Get the errno(3) to return for filesystem errors.
   static int GetFSDeniedErrno();
 
   pid_t GetPolicyPid() const { return baseline_policy_->policy_pid(); }
 
  private:
   // Compose the BaselinePolicy from sandbox/.
   scoped_ptr<sandbox::BaselinePolicy> baseline_policy_;
   DISALLOW_COPY_AND_ASSIGN(SandboxBPFBasePolicy);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_SANDBOX_LINUX_SANDBOX_BPF_BASE_POLICY_LINUX_H_