blob: 49c33df135844d0c5915c05e30e74140409db54d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
// Copyright 2014 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 CHROME_BROWSER_NET_PREDICTION_OPTIONS_H_
#define CHROME_BROWSER_NET_PREDICTION_OPTIONS_H_
namespace user_prefs {
class PrefRegistrySyncable;
}
class PrefService;
class ProfileIOData;
namespace chrome_browser_net {
// Enum describing when to allow network predictions based on connection type.
// The numerical value is stored in the prefs file, therefore the same enum
// with the same order must be used by the platform-dependent components.
// TODO(bnc): implement as per crbug.com/334602.
// NETWORK_PREDICTION_UNSET means that the old preferences,
// kNetworkPredictionEnabled and kAllowPrerender, should be observed.
enum NetworkPredictionOptions {
NETWORK_PREDICTION_ALWAYS,
NETWORK_PREDICTION_WIFI_ONLY,
NETWORK_PREDICTION_NEVER,
NETWORK_PREDICTION_UNSET,
};
void RegisterPredictionOptionsProfilePrefs(
user_prefs::PrefRegistrySyncable* registry);
// Migrate prefs::kNetworkPredictionEnabled user setting (if exists) to
// prefs::kNetworkPredictionOptions (if does not have user setting).
void MigrateNetworkPredictionUserPrefs(PrefService* pref_service);
// The following two global functions determine whether prefetching
// and prerendering are enabled, based on preferences and network type.
// To be executed on the IO thread only.
bool CanPrefetchAndPrerenderIO(ProfileIOData* profile_io_data);
// To be executed on the UI thread only.
bool CanPrefetchAndPrerenderUI(PrefService* prefs);
// TODO(bnc): remove the following function as soon as Android Chrome is
// modified to use CanPrefetchAndPrerenderUI instead.
bool CanPredictNetworkActionsUI(PrefService* prefs);
// The following two global functions determine whether TCP preconnect
// and DNS preresolution are enabled, based on preferences.
// To be executed on the IO thread only.
bool CanPreresolveAndPreconnectIO(ProfileIOData* profile_io_data);
// To be executed on the UI thread only.
bool CanPreresolveAndPreconnectUI(PrefService* prefs);
} // namespace chrome_browser_net
#endif // CHROME_BROWSER_NET_PREDICTION_OPTIONS_H_
|
