Standardize usage of virtual/override/final in content/

content/child/webcrypto/openssl/aes_ctr_openssl.cc

Index: content/child/webcrypto/openssl/aes_ctr_openssl.cc
diff --git a/content/child/webcrypto/openssl/aes_ctr_openssl.cc b/content/child/webcrypto/openssl/aes_ctr_openssl.cc
index 777b1753d68f67c23935725a5f3d8476e7baf96d..82408b2559a9b8371b978fed504eb46518dd89ae 100644
--- a/content/child/webcrypto/openssl/aes_ctr_openssl.cc
+++ b/content/child/webcrypto/openssl/aes_ctr_openssl.cc
@@ -262,17 +262,17 @@ class AesCtrImplementation : public AesAlgorithm {
  public:
   AesCtrImplementation() : AesAlgorithm("CTR") {}
 
-  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 AesCtrEncryptDecrypt(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 AesCtrEncryptDecrypt(algorithm, key, data, buffer);
   }
 };