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
62
|
// Copyright (c) 2012 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.
#include "chrome/browser/net/net_pref_observer.h"
#include "chrome/browser/net/predictor.h"
#include "chrome/browser/prefs/pref_service.h"
#include "chrome/browser/prerender/prerender_manager.h"
#include "chrome/common/chrome_notification_types.h"
#include "chrome/common/pref_names.h"
#include "content/public/browser/browser_thread.h"
#include "net/http/http_stream_factory.h"
using content::BrowserThread;
NetPrefObserver::NetPrefObserver(PrefService* prefs,
prerender::PrerenderManager* prerender_manager,
chrome_browser_net::Predictor* predictor)
: prerender_manager_(prerender_manager),
predictor_(predictor) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
DCHECK(prefs);
DCHECK(predictor);
network_prediction_enabled_.Init(prefs::kNetworkPredictionEnabled, prefs,
this);
spdy_disabled_.Init(prefs::kDisableSpdy, prefs, this);
ApplySettings();
}
NetPrefObserver::~NetPrefObserver() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
}
void NetPrefObserver::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK_EQ(type, chrome::NOTIFICATION_PREF_CHANGED);
ApplySettings();
}
void NetPrefObserver::ApplySettings() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
predictor_->EnablePredictor(*network_prediction_enabled_);
if (prerender_manager_)
prerender_manager_->set_enabled(*network_prediction_enabled_);
if (spdy_disabled_.IsManaged())
net::HttpStreamFactory::set_spdy_enabled(!*spdy_disabled_);
}
// static
void NetPrefObserver::RegisterPrefs(PrefService* prefs) {
prefs->RegisterBooleanPref(prefs::kNetworkPredictionEnabled,
true,
PrefService::SYNCABLE_PREF);
prefs->RegisterBooleanPref(prefs::kDisableSpdy,
false,
PrefService::UNSYNCABLE_PREF);
}
|
