Remove obsolete methods from CRWRequestTrackerDelegate protocol.

ios/web/net/request_tracker_impl_unittest.mm

Index: ios/web/net/request_tracker_impl_unittest.mm
diff --git a/ios/web/net/request_tracker_impl_unittest.mm b/ios/web/net/request_tracker_impl_unittest.mm
index 08750870a298e31b023df3bce495f4d13615d136..61592aafee91ee8b880540ad5ad26697def6a2a9 100644
--- a/ios/web/net/request_tracker_impl_unittest.mm
+++ b/ios/web/net/request_tracker_impl_unittest.mm
@@ -62,10 +62,6 @@
   return self;
 }
 
-- (BOOL)isForStaticFileRequests {
-  return NO;
-}
-
 - (void)updatedProgress:(float)progress {
   if (progress > 0.0f) {
     if (progress < value_) {
@@ -101,14 +97,6 @@
   // Nothing. yet.
 }
 
-- (void)presentSSLError:(const net::SSLInfo&)info
-           forSSLStatus:(const web::SSLStatus&)status
-                  onUrl:(const GURL&)url
-            recoverable:(BOOL)recoverable
-               callback:(SSLErrorCallback)shouldContinue {
-  // Nothing, yet.
-}
-
 - (void)certificateUsed:(net::X509Certificate*)certificate
                 forHost:(const std::string&)host
                  status:(net::CertStatus)status {