|  | // Copyright 2017 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 CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_CONSTANTS_H_ | 
|  | #define CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_CONSTANTS_H_ | 
|  |  | 
|  | namespace content { | 
|  |  | 
|  | // Maximum number of parallel requests that a Background Fetch should fetch. | 
|  | constexpr size_t kMaximumBackgroundFetchParallelRequests = 1; | 
|  |  | 
|  | // Value used to refer to an invalid request index for Background Fetch. | 
|  | constexpr int kInvalidBackgroundFetchRequestIndex = -1; | 
|  |  | 
|  | }  // namespace content | 
|  |  | 
|  | #endif  // CONTENT_BROWSER_BACKGROUND_FETCH_BACKGROUND_FETCH_CONSTANTS_H_ |