[ios] Use -[WKWebView serverTrust] instead of certificateChain on iOS 10.

ios/web/net/crw_ssl_status_updater.h

 // Copyright 2016 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_SSL_STATUS_UPDATER_H_
 #define IOS_WEB_NET_CRW_SSL_STATUS_UPDATER_H_
 
 #import <Foundation/Foundation.h>
+#import <Security/Security.h>
 
+#include "base/mac/scoped_cftyperef.h"
 #include "ios/web/public/security_style.h"
 #include "net/cert/cert_status_flags.h"
 
 namespace web {
 class NavigationItem;
 class NavigationManager;
 }
 
 @protocol CRWSSLStatusUpdaterDataSource;
 @protocol CRWSSLStatusUpdaterDelegate;
@@ skipping 11 matching lines @@
 - (instancetype)initWithDataSource:(id<CRWSSLStatusUpdaterDataSource>)dataSource
                  navigationManager:(web::NavigationManager*)navigationManager
                        certGroupID:(int)certGroupID NS_DESIGNATED_INITIALIZER;
 
 - (instancetype)init NS_UNAVAILABLE;
 
 // Updates SSL status for the current navigation item. The SSL Status is
 // obtained from |host|, |chain| and |hasOnlySecureContent| flag.
 - (void)updateSSLStatusForNavigationItem:(web::NavigationItem*)navigationItem
                             withCertHost:(NSString*)host
-                               certChain:(NSArray*)chain
+                                   trust:
+                                       (base::ScopedCFTypeRef<SecTrustRef>)trust
                     hasOnlySecureContent:(BOOL)hasOnlySecureContent;
 
 @end
 
 // |SSLStatusUpdater:querySSLStatusForTrust:host:completionHandler| completion
 // handler.
 typedef void (^StatusQueryHandler)(web::SecurityStyle, net::CertStatus);
 
 // DataSource for CRWSSLStatusUpdater.
 @protocol CRWSSLStatusUpdaterDataSource
 
 @required
 
 // Called when updater needs SSLStatus for the given |certChain| and |host|.
 // |completionHandler| is called asynchronously when web::SecurityStyle and
 // net::CertStatus are computed.
 - (void)SSLStatusUpdater:(CRWSSLStatusUpdater*)SSLStatusUpdater
-    querySSLStatusForCertChain:(NSArray*)certChain
-                          host:(NSString*)host
-             completionHandler:(StatusQueryHandler)completionHandler;
+    querySSLStatusForTrust:(base::ScopedCFTypeRef<SecTrustRef>)trust
+                      host:(NSString*)host
+         completionHandler:(StatusQueryHandler)completionHandler;
 
 @end
 
 // Delegate for CRWSSLStatusUpdater.
 @protocol CRWSSLStatusUpdaterDelegate<NSObject>
 
 @optional
 
 // Called if SSLStatus has been changed for the given navigation item. May be
 // called multiple times for a single update or not called at all if SSLStatus
 // has not been changed for the requested navigation item.
 - (void)SSLStatusUpdater:(CRWSSLStatusUpdater*)SSLStatusUpdater
     didChangeSSLStatusForNavigationItem:(web::NavigationItem*)navigationItem;
 
 @end
 
 #endif  // IOS_WEB_NET_CRW_SSL_STATUS_UPDATER_H_