net_pref_observer.cc revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd
1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "chrome/browser/net/net_pref_observer.h" 6 7#include "base/prefs/pref_service.h" 8#include "chrome/browser/net/predictor.h" 9#include "chrome/browser/prerender/prerender_manager.h" 10#include "chrome/common/chrome_notification_types.h" 11#include "chrome/common/pref_names.h" 12#include "components/user_prefs/pref_registry_syncable.h" 13#include "content/public/browser/browser_thread.h" 14#include "net/http/http_stream_factory.h" 15 16using content::BrowserThread; 17 18NetPrefObserver::NetPrefObserver(PrefService* prefs, 19 prerender::PrerenderManager* prerender_manager, 20 chrome_browser_net::Predictor* predictor) 21 : prerender_manager_(prerender_manager), 22 predictor_(predictor) { 23 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); 24 DCHECK(prefs); 25 DCHECK(predictor); 26 27 base::Closure prefs_callback = base::Bind(&NetPrefObserver::ApplySettings, 28 base::Unretained(this)); 29 network_prediction_enabled_.Init(prefs::kNetworkPredictionEnabled, prefs, 30 prefs_callback); 31 spdy_disabled_.Init(prefs::kDisableSpdy, prefs, prefs_callback); 32 33 ApplySettings(); 34} 35 36NetPrefObserver::~NetPrefObserver() { 37 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); 38} 39 40void NetPrefObserver::ApplySettings() { 41 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); 42 43 predictor_->EnablePredictor(*network_prediction_enabled_); 44 if (prerender_manager_) 45 prerender_manager_->set_enabled(*network_prediction_enabled_); 46 if (spdy_disabled_.IsManaged()) 47 net::HttpStreamFactory::set_spdy_enabled(!*spdy_disabled_); 48} 49 50// static 51void NetPrefObserver::RegisterUserPrefs(PrefRegistrySyncable* registry) { 52 registry->RegisterBooleanPref(prefs::kNetworkPredictionEnabled, 53 true, 54 PrefRegistrySyncable::SYNCABLE_PREF); 55 registry->RegisterBooleanPref(prefs::kDisableSpdy, 56 false, 57 PrefRegistrySyncable::UNSYNCABLE_PREF); 58} 59