Standardize usage of virtual/override/final in content/

content/child/webcrypto/openssl/aes_kw_openssl.cc

Index: content/child/webcrypto/openssl/aes_kw_openssl.cc
diff --git a/content/child/webcrypto/openssl/aes_kw_openssl.cc b/content/child/webcrypto/openssl/aes_kw_openssl.cc
index cd7c64cbc92bde799b53ffad0bda3cd43f1ff023..c612d53dc96936ca23d5043d99be5308672c3af0 100644
--- a/content/child/webcrypto/openssl/aes_kw_openssl.cc
+++ b/content/child/webcrypto/openssl/aes_kw_openssl.cc
@@ -68,17 +68,17 @@ class AesKwImplementation : public AesAlgorithm {
             blink::WebCryptoKeyUsageWrapKey | blink::WebCryptoKeyUsageUnwrapKey,
             "KW") {}
 
-  virtual Status Encrypt(const blink::WebCryptoAlgorithm& algorithm,
-                         const blink::WebCryptoKey& key,
-                         const CryptoData& data,
-                         std::vector<uint8_t>* buffer) const override {
+  Status Encrypt(const blink::WebCryptoAlgorithm& algorithm,
+                 const blink::WebCryptoKey& key,
+                 const CryptoData& data,
+                 std::vector<uint8_t>* buffer) const override {
     return AesKwEncryptDecrypt(ENCRYPT, algorithm, key, data, buffer);
   }
 
-  virtual Status Decrypt(const blink::WebCryptoAlgorithm& algorithm,
-                         const blink::WebCryptoKey& key,
-                         const CryptoData& data,
-                         std::vector<uint8_t>* buffer) const override {
+  Status Decrypt(const blink::WebCryptoAlgorithm& algorithm,
+                 const blink::WebCryptoKey& key,
+                 const CryptoData& data,
+                 std::vector<uint8_t>* buffer) const override {
     return AesKwEncryptDecrypt(DECRYPT, algorithm, key, data, buffer);
   }
 };