Update from chromium https://crrev.com/301725/

net/socket/unix_domain_listen_socket_posix.h

Index: net/socket/unix_domain_listen_socket_posix.h
diff --git a/net/socket/unix_domain_listen_socket_posix.h b/net/socket/unix_domain_listen_socket_posix.h
index b8f428d4e653d9fdee6af40c635b5d7ffbacd0a2..82ec342edaae83e2061ddc806e1f8973475939d8 100644
--- a/net/socket/unix_domain_listen_socket_posix.h
+++ b/net/socket/unix_domain_listen_socket_posix.h
@@ -103,10 +103,10 @@ class NET_EXPORT UnixDomainListenSocketWithAbstractNamespaceFactory
       const std::string& path,
       const std::string& fallback_path,
       const UnixDomainListenSocket::AuthCallback& auth_callback);
-  virtual ~UnixDomainListenSocketWithAbstractNamespaceFactory();
+  ~UnixDomainListenSocketWithAbstractNamespaceFactory() override;
 
   // UnixDomainListenSocketFactory:
-  virtual scoped_ptr<StreamListenSocket> CreateAndListen(
+  scoped_ptr<StreamListenSocket> CreateAndListen(
       StreamListenSocket::Delegate* delegate) const override;
 
  private: