Standardize usage of virtual/override/final in net/

net/ssl/ssl_client_auth_cache.h

Index: net/ssl/ssl_client_auth_cache.h
diff --git a/net/ssl/ssl_client_auth_cache.h b/net/ssl/ssl_client_auth_cache.h
index 4ee47ed7062235466426a3a9e14c6eaa5fb00078..53d5312a9ee04cba115803258b9619b5ce1f6f5a 100644
--- a/net/ssl/ssl_client_auth_cache.h
+++ b/net/ssl/ssl_client_auth_cache.h
@@ -28,7 +28,7 @@ class X509Certificate;
 class NET_EXPORT_PRIVATE SSLClientAuthCache : public CertDatabase::Observer {
  public:
   SSLClientAuthCache();
-  virtual ~SSLClientAuthCache();
+  ~SSLClientAuthCache() override;
 
   // Checks for a client certificate preference for SSL server at |server|.
   // Returns true if a preference is found, and sets |*certificate| to the
@@ -48,7 +48,7 @@ class NET_EXPORT_PRIVATE SSLClientAuthCache : public CertDatabase::Observer {
   void Remove(const HostPortPair& server);
 
   // CertDatabase::Observer methods:
-  virtual void OnCertAdded(const X509Certificate* cert) override;
+  void OnCertAdded(const X509Certificate* cert) override;
 
  private:
   typedef HostPortPair AuthCacheKey;