Remove obsolete methods from CRWRequestTrackerDelegate protocol.

ios/web/web_state/ui/crw_web_controller.mm

Index: ios/web/web_state/ui/crw_web_controller.mm
diff --git a/ios/web/web_state/ui/crw_web_controller.mm b/ios/web/web_state/ui/crw_web_controller.mm
index 88e33497c50d6ba9f71cb428707f1df916b8b725..56ac889fb64f3775f2c2c0f804fb099e950d14b5 100644
--- a/ios/web/web_state/ui/crw_web_controller.mm
+++ b/ios/web/web_state/ui/crw_web_controller.mm
@@ -3500,10 +3500,6 @@ const NSTimeInterval kSnapshotOverlayTransition = 0.5;
 #pragma mark -
 #pragma mark CRWRequestTrackerDelegate
 
-- (BOOL)isForStaticFileRequests {
-  return NO;
-}
-
 - (void)updatedSSLStatus:(const web::SSLStatus&)sslStatus
               forPageUrl:(const GURL&)url
                 userInfo:(id)userInfo {
@@ -3539,15 +3535,6 @@ const NSTimeInterval kSnapshotOverlayTransition = 0.5;
   _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();