Fixes the cache lock issue.

net/url_request/url_request_http_job.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_http_job.h"
 
 #include <vector>
 
 #include "base/base_switches.h"
 #include "base/bind.h"
@@ skipping 243 matching lines @@
     if (sdch_test_control_)
       RecordPacketStats(SdchPolicyDelegate::SDCH_EXPERIMENT_HOLDBACK);
     if (sdch_test_activated_)
       RecordPacketStats(SdchPolicyDelegate::SDCH_EXPERIMENT_DECODE);
   }
   // Make sure SdchSourceStream are told to emit histogram data while |this|
   // is still alive.
   DestroySourceStream();
 
   DoneWithRequest(ABORTED);
+  if (transaction_) {
+    transaction_->Orphan(std::move(transaction_));
+  }
 }
 
 void URLRequestHttpJob::SetPriority(RequestPriority priority) {
   priority_ = priority;
   if (transaction_)
     transaction_->SetPriority(priority_);
 }
 
 void URLRequestHttpJob::Start() {
   // TODO(mmenke): Remove ScopedTracker below once crbug.com/456327 is fixed.
@@ skipping 156 matching lines @@
 
 void URLRequestHttpJob::DestroyTransaction() {
   DCHECK(transaction_.get());
 
   DoneWithRequest(ABORTED);
 
   total_received_bytes_from_previous_transactions_ +=
       transaction_->GetTotalReceivedBytes();
   total_sent_bytes_from_previous_transactions_ +=
       transaction_->GetTotalSentBytes();
-  transaction_.reset();
+  transaction_->Orphan(std::move(transaction_));
   response_info_ = NULL;
   receive_headers_end_ = base::TimeTicks();
 }
 
 void URLRequestHttpJob::StartTransaction() {
   // TODO(mmenke): Remove ScopedTracker below once crbug.com/456327 is fixed.
   tracked_objects::ScopedTracker tracking_profile(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
           "456327 URLRequestHttpJob::StartTransaction"));
 
@@ skipping 1088 matching lines @@
   awaiting_callback_ = false;
 
   // Notify NetworkQualityEstimator.
   NetworkQualityEstimator* network_quality_estimator =
       request()->context()->network_quality_estimator();
   if (network_quality_estimator)
     network_quality_estimator->NotifyURLRequestDestroyed(*request());
 }
 
 }  // namespace net