Remove support for the keygen tag

net/base/keygen_handler.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef NET_BASE_KEYGEN_HANDLER_H_
-#define NET_BASE_KEYGEN_HANDLER_H_
-
-#include <memory>
-#include <string>
-
-#include "base/callback_forward.h"
-#include "build/build_config.h"
-#include "net/base/net_export.h"
-#include "url/gurl.h"
-
-namespace crypto {
-class NSSCryptoModuleDelegate;
-}
-
-namespace net {
-
-// This class handles keypair generation for generating client
-// certificates via the <keygen> tag.
-// <http://dev.w3.org/html5/spec/Overview.html#the-keygen-element>
-// <https://developer.mozilla.org/En/HTML/HTML_Extensions/KEYGEN_Tag>
-
-class NET_EXPORT KeygenHandler {
- public:
-  // Creates a handler that will generate a key with the given key size and
-  // incorporate the |challenge| into the Netscape SPKAC structure. The request
-  // for the key originated from |url|.
-  KeygenHandler(int key_size_in_bits,
-                const std::string& challenge,
-                const GURL& url);
-  ~KeygenHandler();
-
-  // Actually generates the key-pair and the cert request (SPKAC), and returns
-  // a base64-encoded string suitable for use as the form value of <keygen>.
-  std::string GenKeyAndSignChallenge();
-
-  // Exposed only for unit tests.
-  void set_stores_key(bool store) { stores_key_ = store;}
-
-#if defined(USE_NSS_CERTS)
-  // Register the delegate to be used to get the token to store the key in, and
-  // to get the password if the token is unauthenticated.
-  // GenKeyAndSignChallenge runs on a worker thread, so using a blocking
-  // password callback is okay here.
-  void set_crypto_module_delegate(
-      std::unique_ptr<crypto::NSSCryptoModuleDelegate> delegate);
-#endif  // defined(USE_NSS_CERTS)
-
- private:
-  int key_size_in_bits_;  // key size in bits (usually 2048)
-  std::string challenge_;  // challenge string sent by server
-  GURL url_;  // the URL that requested the key
-  bool stores_key_;  // should the generated key-pair be stored persistently?
-#if defined(USE_NSS_CERTS)
-  // The callback for requesting a password to the PKCS#11 token.
-  std::unique_ptr<crypto::NSSCryptoModuleDelegate> crypto_module_delegate_;
-#endif  // defined(USE_NSS_CERTS)
-};
-
-}  // namespace net
-
-#endif  // NET_BASE_KEYGEN_HANDLER_H_