Standardize usage of virtual/override/final in net/

net/cert/cert_verify_proc_mac.h

Index: net/cert/cert_verify_proc_mac.h
diff --git a/net/cert/cert_verify_proc_mac.h b/net/cert/cert_verify_proc_mac.h
index f26768f9e710a508ba91be60712f17443ed72def..5cd7f4c157c372ffb0bdfd91ee844d8454a36c4f 100644
--- a/net/cert/cert_verify_proc_mac.h
+++ b/net/cert/cert_verify_proc_mac.h
@@ -15,18 +15,18 @@ class CertVerifyProcMac : public CertVerifyProc {
  public:
   CertVerifyProcMac();
 
-  virtual bool SupportsAdditionalTrustAnchors() const override;
+  bool SupportsAdditionalTrustAnchors() const override;
 
  protected:
-  virtual ~CertVerifyProcMac();
+  ~CertVerifyProcMac() override;
 
  private:
-  virtual int VerifyInternal(X509Certificate* cert,
-                             const std::string& hostname,
-                             int flags,
-                             CRLSet* crl_set,
-                             const CertificateList& additional_trust_anchors,
-                             CertVerifyResult* verify_result) override;
+  int VerifyInternal(X509Certificate* cert,
+                     const std::string& hostname,
+                     int flags,
+                     CRLSet* crl_set,
+                     const CertificateList& additional_trust_anchors,
+                     CertVerifyResult* verify_result) override;
 };
 
 }  // namespace net