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

net/base/network_delegate_impl.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/network_delegate_impl.h"
 
 #include "net/base/net_errors.h"
 
 namespace net {
 
@@ skipping 50 matching lines @@
 
 void NetworkDelegateImpl::OnNetworkBytesSent(URLRequest* request,
                                              int64_t bytes_sent) {}
 
 void NetworkDelegateImpl::OnCompleted(URLRequest* request, bool started) {
 }
 
 void NetworkDelegateImpl::OnURLRequestDestroyed(URLRequest* request) {
 }
 
-void NetworkDelegateImpl::OnURLRequestJobOrphaned(URLRequest* request) {}
-
 void NetworkDelegateImpl::OnPACScriptError(int line_number,
                                            const base::string16& error) {
 }
 
 NetworkDelegate::AuthRequiredResponse NetworkDelegateImpl::OnAuthRequired(
     URLRequest* request,
     const AuthChallengeInfo& auth_info,
     const AuthCallback& callback,
     AuthCredentials* credentials) {
   return AUTH_REQUIRED_RESPONSE_NO_ACTION;
@@ skipping 26 matching lines @@
 }
 
 bool NetworkDelegateImpl::OnCancelURLRequestWithPolicyViolatingReferrerHeader(
     const URLRequest& request,
     const GURL& target_url,
     const GURL& referrer_url) const {
   return false;
 }
 
 }  // namespace net