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

net/base/network_delegate_impl.h

 // 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.
 
 #ifndef NET_BASE_NETWORK_DELEGATE_IMPL_H_
 #define NET_BASE_NETWORK_DELEGATE_IMPL_H_
 
 #include <stdint.h>
 
 #include "base/strings/string16.h"
@@ skipping 129 matching lines @@
   // Indicates that the URL request has been completed or failed.
   // |started| indicates whether the request has been started. If false,
   // some information like the socket address is not available.
   void OnCompleted(URLRequest* request, bool started) override;
 
   // Called when an URLRequest is being destroyed. Note that the request is
   // being deleted, so it's not safe to call any methods that may result in
   // a virtual method call.
   void OnURLRequestDestroyed(URLRequest* request) override;
 
-  // Called when the current job for |request| is orphaned. This is a temporary
-  // callback to diagnose https://crbug.com/289715 and may not be used for other
-  // purposes. Note that it may be called after OnURLRequestDestroyed.
-  //
-  // TODO(davidben): Remove this once data has been gathered.
-  void OnURLRequestJobOrphaned(URLRequest* request) override;
-
   // Corresponds to ProxyResolverJSBindings::OnError.
   void OnPACScriptError(int line_number, const base::string16& error) override;
 
   // Called when a request receives an authentication challenge
   // specified by |auth_info|, and is unable to respond using cached
   // credentials. |callback| and |credentials| must be non-NULL, and must
   // be valid until OnURLRequestDestroyed is called for |request|.
   //
   // The following return values are allowed:
   //  - AUTH_REQUIRED_RESPONSE_NO_ACTION: |auth_info| is observed, but
@@ skipping 53 matching lines @@
   // header is stripped from the request.
   bool OnCancelURLRequestWithPolicyViolatingReferrerHeader(
       const URLRequest& request,
       const GURL& target_url,
       const GURL& referrer_url) const override;
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_NETWORK_DELEGATE_IMPL_H_