chrome/browser/net/net_pref_observer.cc

   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/bind.h"
   8 #include "base/logging.h"
   9 #include "base/prefs/pref_service.h"
  10 #include "chrome/common/pref_names.h"
  11 #include "components/pref_registry/pref_registry_syncable.h"
  12 #include "content/public/browser/browser_thread.h"
  13 #include "net/http/http_stream_factory.h"
  14
  15 using content::BrowserThread;
  16
  17 NetPrefObserver::NetPrefObserver(PrefService* prefs) {
  18   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  19   DCHECK(prefs);
  20
  21   base::Closure prefs_callback = base::Bind(&NetPrefObserver::ApplySettings,
  22                                             base::Unretained(this));
  23   spdy_disabled_.Init(prefs::kDisableSpdy, prefs, prefs_callback);
  24
  25   ApplySettings();
  26 }
  27
  28 NetPrefObserver::~NetPrefObserver() {
  29   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  30 }
  31
  32 void NetPrefObserver::ApplySettings() {
  33   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  34
  35   if (spdy_disabled_.IsManaged())
  36     net::HttpStreamFactory::set_spdy_enabled(!*spdy_disabled_);
  37 }
  38
  39 // static
  40 void NetPrefObserver::RegisterProfilePrefs(
  41     user_prefs::PrefRegistrySyncable* registry) {
  42   registry->RegisterBooleanPref(
  43       prefs::kNetworkPredictionEnabled,
  44       true,
  45       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
  46   registry->RegisterBooleanPref(
  47       prefs::kDisableSpdy,
  48       false,
  49       user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
  50 }