Allows deferral of a URLRequest just before talking to the network, at

net/http/http_transaction_unittest.h

 // 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.
 
 #ifndef NET_HTTP_HTTP_TRANSACTION_UNITTEST_H_
 #define NET_HTTP_HTTP_TRANSACTION_UNITTEST_H_
 
 #include "net/http/http_transaction.h"
 
 #include <string>
@@ skipping 193 matching lines @@
   virtual net::UploadProgress GetUploadProgress() const OVERRIDE;
 
   virtual bool GetLoadTimingInfo(
       net::LoadTimingInfo* load_timing_info) const OVERRIDE;
 
   virtual void SetPriority(net::RequestPriority priority) OVERRIDE;
 
   virtual void SetWebSocketHandshakeStreamCreateHelper(
       CreateHelper* create_helper) OVERRIDE;
 
+  virtual void SetBeforeNetworkStartCallback(
+      const BeforeNetworkStartCallback& callback) OVERRIDE;
+
+  virtual int ResumeNetworkStart() OVERRIDE;
+
   CreateHelper* websocket_handshake_stream_create_helper() {
     return websocket_handshake_stream_create_helper_;
   }
   net::RequestPriority priority() const { return priority_; }
 
  private:
   int StartInternal(const net::HttpRequestInfo* request,
                     const net::CompletionCallback& callback,
                     const net::BoundNetLog& net_log);
   void CallbackLater(const net::CompletionCallback& callback, int result);
@@ skipping 61 matching lines @@
   base::WeakPtr<MockNetworkTransaction> last_transaction_;
 };
 
 //-----------------------------------------------------------------------------
 // helpers
 
 // read the transaction completely
 int ReadTransaction(net::HttpTransaction* trans, std::string* result);
 
 #endif  // NET_HTTP_HTTP_TRANSACTION_UNITTEST_H_