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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_LOFI_DECIDER_H_ | 5 #ifndef COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_LOFI_DECIDER_H_ |
6 #define COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_LOFI_DECIDER_H_ | 6 #define COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_LOFI_DECIDER_H_ |
7 | 7 |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 | 9 |
10 namespace net { | 10 namespace net { |
11 class HttpRequestHeaders; | 11 class HttpRequestHeaders; |
12 class ProxyServer; | |
13 class URLRequest; | 12 class URLRequest; |
14 } | 13 } |
15 | 14 |
16 namespace data_reduction_proxy { | 15 namespace data_reduction_proxy { |
17 | 16 |
18 class DataReductionProxyConfig; | |
19 | |
20 // Interface to determine if a request should be made for a low fidelity version | 17 // Interface to determine if a request should be made for a low fidelity version |
21 // of the resource. | 18 // of the resource. |
22 class LoFiDecider { | 19 class LoFiDecider { |
23 public: | 20 public: |
24 virtual ~LoFiDecider() {} | 21 virtual ~LoFiDecider() {} |
25 | 22 |
26 // Returns true when Lo-Fi mode is on for the given |request|. This means the | 23 // Returns true when Lo-Fi mode is on for the given |request|. This means the |
27 // Lo-Fi header should be added to the given request. | 24 // Lo-Fi header should be added to the given request. |
28 virtual bool IsUsingLoFiMode(const net::URLRequest& request) const = 0; | 25 virtual bool IsUsingLoFiMode(const net::URLRequest& request) const = 0; |
29 | 26 |
30 // Returns true when Lo-Fi mode is on for the given |request|. If the | 27 // Returns true when Lo-Fi mode is on for the given |request|. If the |
31 // |request| is using Lo-Fi mode, adds the "q=low" directive to the |headers|. | 28 // |request| is using Lo-Fi mode, adds the "q=low" directive to the |headers|. |
32 // If the |request| is using Lo-Fi preview mode, and it is a main frame | 29 // If the |request| is using Lo-Fi preview mode, and it is a main frame |
33 // request adds the "q=preview" and it is a main frame request directive to | 30 // request adds the "q=preview" and it is a main frame request directive to |
34 // the |headers|. Only adds this header if the provided |proxy_server| is a | 31 // the |headers|. |
35 // data reduction proxy as identified by the given |config|. | |
36 virtual bool MaybeAddLoFiDirectiveToHeaders( | 32 virtual bool MaybeAddLoFiDirectiveToHeaders( |
37 const net::URLRequest& request, | 33 const net::URLRequest& request, |
38 net::HttpRequestHeaders* headers, | 34 net::HttpRequestHeaders* headers) const = 0; |
39 const net::ProxyServer& proxy_server, | |
40 DataReductionProxyConfig* config) const = 0; | |
41 }; | 35 }; |
42 | 36 |
43 } // namespace data_reduction_proxy | 37 } // namespace data_reduction_proxy |
44 | 38 |
45 #endif // COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_LOFI_DECIDER_H_ | 39 #endif // COMPONENTS_DATA_REDUCTION_PROXY_CORE_BROWSER_LOFI_DECIDER_H_ |
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