Revert of WKWebView: Added cert verification API to web controller.

ios/web/net/crw_cert_verification_controller.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_CRW_CERT_VERIFICATION_CONTROLLER_H_
-#define IOS_WEB_NET_CRW_CERT_VERIFICATION_CONTROLLER_H_
-
-#import <Foundation/Foundation.h>
-
-#import "base/memory/ref_counted.h"
-#include "net/cert/cert_status_flags.h"
-
-namespace net {
-class X509Certificate;
-}
-
-namespace web {
-
-class BrowserState;
-
-// Accept policy for valid or invalid SSL cert.
-typedef NS_ENUM(NSInteger, CertAcceptPolicy) {
-  // Cert status can't be determined due to an error. Caller should not proceed
-  // with the load, but show net error page instead.
-  CERT_ACCEPT_POLICY_NON_RECOVERABLE_ERROR = 0,
-  // Cert is not valid. Caller may present SSL warning and ask used if they
-  // want to proceed with the load.
-  CERT_ACCEPT_POLICY_RECOVERABLE_ERROR,
-  // Cert is valid. Caller should proceed with the load.
-  CERT_ACCEPT_POLICY_ALLOW,
-};
-
-// Completion handler called by decidePolicyForCert:host:completionHandler:.
-typedef void (^PolicyDecisionHandler)(web::CertAcceptPolicy, net::CertStatus);
-
-}  // namespace web
-
-// Provides various cert verification API that can be used for blocking requests
-// with bad SSL cert, presenting SSL interstitials and determining SSL status
-// for Navigation Items. Must be used on UI thread.
-@interface CRWCertVerificationController : NSObject
-
-- (instancetype)init NS_UNAVAILABLE;
-
-// Initializes CRWCertVerificationController with the given |browserState| which
-// cannot be null and must outlive CRWCertVerificationController.
-- (instancetype)initWithBrowserState:(web::BrowserState*)browserState
-    NS_DESIGNATED_INITIALIZER;
-
-// TODO(eugenebut): add API for:
-// - accepting bad SSL cert using CertPolicyCache
-// - querying SSL cert status for Navigation Item
-
-// Decides the policy for the given |cert| for the given |host| and calls
-// |completionHandler| on completion. |completionHandler| cannot be null and
-// will be called synchronously or asynchronously on UI thread.
-- (void)decidePolicyForCert:(const scoped_refptr<net::X509Certificate>&)cert
-                       host:(NSString*)host
-          completionHandler:(web::PolicyDecisionHandler)handler;
-
-// Cancels all pending verification requests. Completion handlers will not be
-// called after |shutDown| call. Must always be called before object's
-// deallocation.
-- (void)shutDown;
-
-@end
-
-#endif  // IOS_WEB_NET_CRW_CERT_VERIFICATION_CONTROLLER_H_