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

net/url_request/url_request.cc

 // Copyright (c) 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.
 
 #include "net/url_request/url_request.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
@@ skipping 861 matching lines @@
   load_timing_info_ = LoadTimingInfo();
   load_timing_info_.request_start_time = response_info_.request_time;
   load_timing_info_.request_start = base::TimeTicks::Now();
 
   status_ = URLRequestStatus();
   is_pending_ = false;
   proxy_server_ = HostPortPair();
 }
 
 void URLRequest::OrphanJob() {
-  if (network_delegate_)
-    network_delegate_->NotifyURLRequestJobOrphaned(this);
-
   // When calling this function, please check that URLRequestHttpJob is
   // not in between calling NetworkDelegate::NotifyHeadersReceived receiving
   // the call back. This is currently guaranteed by the following strategies:
   // - OrphanJob is called on JobRestart, in this case the URLRequestJob cannot
   //   be receiving any headers at that time.
   // - OrphanJob is called in ~URLRequest, in this case
   //   NetworkDelegate::NotifyURLRequestDestroyed notifies the NetworkDelegate
   //   that the callback becomes invalid.
   job_->Kill();
   job_->DetachRequest();  // ensures that the job will not call us again
@@ skipping 303 matching lines @@
 }
 
 void URLRequest::GetConnectionAttempts(ConnectionAttempts* out) const {
   if (job_)
     job_->GetConnectionAttempts(out);
   else
     out->clear();
 }
 
 }  // namespace net