Remove obsolete methods from CRWRequestTrackerDelegate protocol.

ios/web/web_state/ui/crw_web_controller.mm

 // Copyright 2012 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.
 
 #import "ios/web/web_state/ui/crw_web_controller.h"
 
 #import <WebKit/WebKit.h>
 
 #import <objc/runtime.h>
 #include <stddef.h>
@@ skipping 3482 matching lines @@
 }
 
 - (void)clearWebUI {
   _webStateImpl->ClearWebUI();
   _webUIManager.reset();
 }
 
 #pragma mark -
 #pragma mark CRWRequestTrackerDelegate
 
-- (BOOL)isForStaticFileRequests {
-  return NO;
-}
-
 - (void)updatedSSLStatus:(const web::SSLStatus&)sslStatus
               forPageUrl:(const GURL&)url
                 userInfo:(id)userInfo {
   // |userInfo| is a CRWSessionEntry.
   web::NavigationItem* item =
       [static_cast<CRWSessionEntry*>(userInfo) navigationItem];
   if (!item)
     return;  // This is a request update for an entry that no longer exists.
 
   // This condition happens infrequently when a page load is misinterpreted as
@@ skipping 15 matching lines @@
   if (userInfo == self.currentSessionEntry) {
     [self didUpdateSSLStatusForCurrentNavigationItem];
   }
 }
 
 - (void)handleResponseHeaders:(net::HttpResponseHeaders*)headers
                    requestUrl:(const GURL&)requestUrl {
   _webStateImpl->OnHttpResponseHeadersReceived(headers, requestUrl);
 }
 
-- (void)presentSSLError:(const net::SSLInfo&)info
-           forSSLStatus:(const web::SSLStatus&)status
-                  onUrl:(const GURL&)url
-            recoverable:(BOOL)recoverable
-               callback:(SSLErrorCallback)shouldContinue {
-  // This is a UIWebView callback, which is no longer called.
-  NOTREACHED();
-}
-
 - (void)updatedProgress:(float)progress {
   // This is a UIWebView callback, which is no longer called.
   NOTREACHED();
 }
 
 - (void)certificateUsed:(net::X509Certificate*)certificate
                 forHost:(const std::string&)host
                  status:(net::CertStatus)status {
   [[[self sessionController] sessionCertificatePolicyManager]
       registerAllowedCertificate:certificate
@@ skipping 1966 matching lines @@
   }
 
   return web::WEB_VIEW_DOCUMENT_TYPE_GENERIC;
 }
 
 - (NSString*)refererFromNavigationAction:(WKNavigationAction*)action {
   return [action.request valueForHTTPHeaderField:@"Referer"];
 }
 
 @end