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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef NET_HTTP_HTTP_TRANSACTION_DELEGATE_H_
      6 #define NET_HTTP_HTTP_TRANSACTION_DELEGATE_H_
      7 
      8 namespace net {
      9 
     10 // Delegate class receiving notifications when cache or network actions start
     11 // and finish, i.e. when the object starts and finishes waiting on an
     12 // underlying cache or the network.  The owner of a HttpTransaction can use
     13 // this to register a delegate to receive notifications when these events
     14 // happen.
     15 class HttpTransactionDelegate {
     16  public:
     17   virtual ~HttpTransactionDelegate() {}
     18   virtual void OnCacheActionStart() = 0;
     19   virtual void OnCacheActionFinish() = 0;
     20   virtual void OnNetworkActionStart() = 0;
     21   virtual void OnNetworkActionFinish() = 0;
     22 };
     23 
     24 }  // namespace net
     25 
     26 #endif  // NET_HTTP_HTTP_TRANSACTION_DELEGATE_H_
     27