Revert of CHECK that URLRequestJobs are not orphaned while blocked by extensions.

net/base/layered_network_delegate.cc

 // Copyright 2014 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.
 
 #include "net/base/layered_network_delegate.h"
 
 namespace net {
 
 LayeredNetworkDelegate::LayeredNetworkDelegate(
     scoped_ptr<NetworkDelegate> nested_network_delegate)
@@ skipping 157 matching lines @@
 
 void LayeredNetworkDelegate::OnURLRequestDestroyed(URLRequest* request) {
   OnURLRequestDestroyedInternal(request);
   nested_network_delegate_->NotifyURLRequestDestroyed(request);
 }
 
 void LayeredNetworkDelegate::OnURLRequestDestroyedInternal(
     URLRequest* request) {
 }
 
-void LayeredNetworkDelegate::OnURLRequestJobOrphaned(URLRequest* request) {
-  // This hook is only added to debug https://crbug.com/289715, so there is no
-  // need for a OnURLRequestJobOrphanedInternal hook.
-  nested_network_delegate_->NotifyURLRequestJobOrphaned(request);
-}
-
 void LayeredNetworkDelegate::OnPACScriptError(int line_number,
                                               const base::string16& error) {
   OnPACScriptErrorInternal(line_number, error);
   nested_network_delegate_->NotifyPACScriptError(line_number, error);
 }
 
 void LayeredNetworkDelegate::OnPACScriptErrorInternal(
     int line_number,
     const base::string16& error) {
 }
@@ skipping 84 matching lines @@
 }
 
 void LayeredNetworkDelegate::
     OnCancelURLRequestWithPolicyViolatingReferrerHeaderInternal(
         const URLRequest& request,
         const GURL& target_url,
         const GURL& referrer_url) const {
 }
 
 }  // namespace net