URLRequestHttpJob::StartTransaction should honour network delegate.

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 "base/base_switches.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ skipping 324 matching lines @@
   transaction_.reset();
   response_info_ = NULL;
 }
 
 void URLRequestHttpJob::StartTransaction() {
   if (request_->context()->network_delegate()) {
     int rv = request_->context()->network_delegate()->NotifyBeforeSendHeaders(
         request_, notify_before_headers_sent_callback_,
         &request_info_.extra_headers);
     // If an extension blocks the request, we rely on the callback to
-    // StartTransactionInternal().
+    // MaybeStartTransactionInternal().
     if (rv == ERR_IO_PENDING) {
       SetBlockedOnDelegate();
       return;
     }
+    MaybeStartTransactionInternal(rv);
+    return;
   }
   StartTransactionInternal();
 }
 
 void URLRequestHttpJob::NotifyBeforeSendHeadersCallback(int result) {
   SetUnblockedOnDelegate();
 
   // Check that there are no callbacks to already canceled requests.
   DCHECK_NE(URLRequestStatus::CANCELED, GetStatus().status());
 
+  MaybeStartTransactionInternal(result);
+}
+
+void URLRequestHttpJob::MaybeStartTransactionInternal(int result) {
   if (result == OK) {
     StartTransactionInternal();
   } else {
     std::string source("delegate");
     request_->net_log().AddEvent(NetLog::TYPE_CANCELLED,
                                  NetLog::StringCallback("source", &source));
     NotifyCanceled();
+    NotifyStartError(URLRequestStatus(URLRequestStatus::FAILED, result));
   }
 }
 
 void URLRequestHttpJob::StartTransactionInternal() {
   // NOTE: This method assumes that request_info_ is already setup properly.
 
   // If we already have a transaction, then we should restart the transaction
   // with auth provided by auth_credentials_.
 
   int rv;
@@ skipping 1251 matching lines @@
 
 void URLRequestHttpJob::NotifyURLRequestDestroyed() {
   awaiting_callback_ = false;
 }
 
 void URLRequestHttpJob::OnDetachRequest() {
   http_transaction_delegate_->OnDetachRequest();
 }
 
 }  // namespace net