[ios] Removed CertVerifierBlockAdapter.

ios/web/net/cert_verifier_block_adapter.h

-// Copyright 2015 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 IOS_WEB_NET_CERT_VERIFIER_BLOCK_ADAPTER_H_
-#define IOS_WEB_NET_CERT_VERIFIER_BLOCK_ADAPTER_H_
-
-#include "base/memory/scoped_vector.h"
-#include "base/threading/thread_checker.h"
-#include "net/cert/cert_verifier.h"
-#include "net/cert/cert_verify_result.h"
-
-namespace net {
-class CRLSet;
-class NetLog;
-class X509Certificate;
-}  // namespace net
-
-namespace web {
-
-// Provides block-based interface for |net::CertVerifier|. This class must be
-// created and used on the same thread where the |net::CertVerifier| was
-// created.
-class CertVerifierBlockAdapter {
- public:
-  // Constructs adapter with given |CertVerifier| and |NetLog|, both can not be
-  // null. CertVerifierBlockAdapter does NOT take ownership of |cert_verifier|
-  // and |net_log|.
-  CertVerifierBlockAdapter(net::CertVerifier* cert_verifier,
-                           net::NetLog* net_log);
-
-  // When the verifier is destroyed, certificate verification requests are not
-  // canceled, and their completion handlers are guaranteed to be called.
-  ~CertVerifierBlockAdapter();
-
-  // Encapsulates verification params. |cert| and |hostname| are mandatory, the
-  // other params are optional. If either of mandatory arguments is null or
-  // empty then verification |CompletionHandler| will be called with
-  // ERR_INVALID_ARGUMENT |error|.
-  struct Params {
-    // Constructs Params from X509 cert and hostname, which are mandatory for
-    // verification.
-    Params(const scoped_refptr<net::X509Certificate>& cert,
-           const std::string& hostname);
-    Params(const Params& other);
-    ~Params();
-
-    // Certificate to verify, can not be null.
-    scoped_refptr<net::X509Certificate> cert;
-
-    // Hostname as an SSL server, can not be empty.
-    std::string hostname;
-
-    // If non-empty, is a stapled OCSP response to use.
-    std::string ocsp_response;
-
-    // Bitwise OR of |net::CertVerifier::VerifyFlags|.
-    int flags;
-
-    // An optional |net::CRLSet| structure which can be used to avoid revocation
-    // checks over the network.
-    scoped_refptr<net::CRLSet> crl_set;
-  };
-
-  // Type of verification completion block. If cert is successfully validated
-  // |error| is OK, otherwise |error| is a net error code.
-  typedef void (^CompletionHandler)(net::CertVerifyResult result, int error);
-
-  // Verifies certificate with given |params|. |completion_handler| must not be
-  // null and can be called either synchronously (in the same runloop) or
-  // asynchronously.
-  // Note: |completion_handler| is guaranteed to be called, even if the instance
-  // |Verify()| was called on is destroyed.
-  void Verify(const Params& params, CompletionHandler completion_handler);
-
- private:
-  // Underlying unowned CertVerifier.
-  net::CertVerifier* cert_verifier_;
-  // Unowned NetLog required by CertVerifier.
-  net::NetLog* net_log_;
-  // CertVerifierBlockAdapter should be used on the same thread where it was
-  // created.
-  base::ThreadChecker thread_checker_;
-};
-
-}  // namespace web
-
-#endif  // IOS_WEB_NET_CERT_VERIFIER_BLOCK_ADAPTER_H_