Standardize usage of virtual/override/final in content/

content/child/webcrypto/openssl/key_openssl.h

 // 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.
 
 #ifndef CONTENT_CHILD_WEBCRYPTO_OPENSSL_KEY_OPENSSL_H_
 #define CONTENT_CHILD_WEBCRYPTO_OPENSSL_KEY_OPENSSL_H_
 
 #include <openssl/ossl_typ.h>
 #include <stdint.h>
 #include <vector>
@@ skipping 30 matching lines @@
   const std::vector<uint8_t> serialized_key_data_;
 };
 
 class SymKeyOpenSsl : public KeyOpenSsl {
  public:
   virtual ~SymKeyOpenSsl();
   explicit SymKeyOpenSsl(const CryptoData& raw_key_data);
 
   static SymKeyOpenSsl* Cast(const blink::WebCryptoKey& key);
 
-  virtual SymKeyOpenSsl* AsSymKey() override;
+  SymKeyOpenSsl* AsSymKey() override;
 
   const std::vector<uint8_t>& raw_key_data() const {
     return serialized_key_data();
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SymKeyOpenSsl);
 };
 
 class AsymKeyOpenSsl : public KeyOpenSsl {
  public:
   virtual ~AsymKeyOpenSsl();
   AsymKeyOpenSsl(crypto::ScopedEVP_PKEY key,
                  const CryptoData& serialized_key_data);
 
   static AsymKeyOpenSsl* Cast(const blink::WebCryptoKey& key);
 
-  virtual AsymKeyOpenSsl* AsAsymKey() override;
+  AsymKeyOpenSsl* AsAsymKey() override;
 
   EVP_PKEY* key() { return key_.get(); }
 
  private:
   crypto::ScopedEVP_PKEY key_;
 
   DISALLOW_COPY_AND_ASSIGN(AsymKeyOpenSsl);
 };
 
 }  // namespace webcrypto
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_WEBCRYPTO_OPENSSL_KEY_OPENSSL_H_