|  | // Copyright 2014 The Chromium OS 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 METRICS_UPLOADER_SENDER_H_ | 
|  | #define METRICS_UPLOADER_SENDER_H_ | 
|  |  | 
|  | #include <string> | 
|  |  | 
|  | // Abstract class for a Sender that uploads a metrics message. | 
|  | class Sender { | 
|  | public: | 
|  | virtual ~Sender() {} | 
|  | // Sends a message |content| with its sha1 hash |hash| | 
|  | virtual bool Send(const std::string& content, const std::string& hash) = 0; | 
|  | }; | 
|  |  | 
|  | #endif  // METRICS_UPLOADER_SENDER_H_ |