Standardize usage of virtual/override/final in content/

content/child/webcrypto/openssl/aes_cbc_openssl.cc

Index: content/child/webcrypto/openssl/aes_cbc_openssl.cc
diff --git a/content/child/webcrypto/openssl/aes_cbc_openssl.cc b/content/child/webcrypto/openssl/aes_cbc_openssl.cc
index ca917c506747e486045fdb3d1aab327868e5f489..860acc45d3b89e5c535bac4bee08b79d8ef8a857 100644
--- a/content/child/webcrypto/openssl/aes_cbc_openssl.cc
+++ b/content/child/webcrypto/openssl/aes_cbc_openssl.cc
@@ -113,17 +113,17 @@ class AesCbcImplementation : public AesAlgorithm {
  public:
   AesCbcImplementation() : AesAlgorithm("CBC") {}
 
-  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 AesCbcEncryptDecrypt(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 AesCbcEncryptDecrypt(DECRYPT, algorithm, key, data, buffer);
   }
 };