|  | // Copyright 2019 The Chromium Authors | 
|  | // Use of this source code is governed by a BSD-style license that can be | 
|  | // found in the LICENSE file. | 
|  | // | 
|  | // This file contains definitions for media caching metrics. | 
|  |  | 
|  | #ifndef NET_BASE_CACHE_METRICS_H_ | 
|  | #define NET_BASE_CACHE_METRICS_H_ | 
|  |  | 
|  | #include "base/metrics/histogram_macros.h" | 
|  | #include "net/base/net_export.h" | 
|  |  | 
|  | namespace net { | 
|  |  | 
|  | // UMA histogram enumerations for indicating whether media caching | 
|  | // is enabled or disabled. | 
|  | enum class MediaResponseCacheType { | 
|  | kMediaResponseTransactionCacheDisabled = 0, | 
|  | kMediaResponseTransactionCacheEnabled = 1, | 
|  | kMaxValue = kMediaResponseTransactionCacheEnabled | 
|  | }; | 
|  |  | 
|  | NET_EXPORT void MediaCacheStatusResponseHistogram(MediaResponseCacheType type); | 
|  |  | 
|  | }  // namespace net | 
|  |  | 
|  | #endif  // NET_BASE_CACHE_METRICS_H_ |