Remove net-internals page for throttling, introduce flag for extension devs instead.

chrome/browser/net/net_pref_observer.cc

 // 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 "base/bind.h"
 #include "chrome/browser/net/predictor.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/notification_details.h"
 #include "net/http/http_stream_factory.h"
-#include "net/url_request/url_request_throttler_manager.h"
 
 using content::BrowserThread;
 
-namespace {
-
-// Callback function to call the set_enforce_throttling member on the
-// URLRequestThrottlerManager singleton.
-void SetEnforceThrottlingOnThrottlerManager(bool enforce) {
-  net::URLRequestThrottlerManager::GetInstance()->set_enforce_throttling(
-      enforce);
-}
-
-}
-
 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);
-  http_throttling_enabled_.Init(prefs::kHttpThrottlingEnabled, prefs, this);
 
   ApplySettings(NULL);
 }
 
 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);
 
   std::string* pref_name = content::Details<std::string>(details).ptr();
   ApplySettings(pref_name);
 }
 
 void NetPrefObserver::ApplySettings(const std::string* pref_name) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   predictor_->EnablePredictor(*network_prediction_enabled_);
   if (prerender_manager_)
     prerender_manager_->set_enabled(*network_prediction_enabled_);
   net::HttpStreamFactory::set_spdy_enabled(!*spdy_disabled_);
-
-  if (!pref_name || *pref_name == prefs::kHttpThrottlingEnabled) {
-    BrowserThread::PostTask(
-        BrowserThread::IO, FROM_HERE,
-        base::Bind(&SetEnforceThrottlingOnThrottlerManager,
-                   *http_throttling_enabled_));
-  }
 }
 
 // static
 void NetPrefObserver::RegisterPrefs(PrefService* prefs) {
   prefs->RegisterBooleanPref(prefs::kNetworkPredictionEnabled,
                              true,
                              PrefService::SYNCABLE_PREF);
   prefs->RegisterBooleanPref(prefs::kDisableSpdy,
                              false,
                              PrefService::UNSYNCABLE_PREF);
-  prefs->RegisterBooleanPref(prefs::kHttpThrottlingEnabled,
-                             true,
-                             PrefService::UNSYNCABLE_PREF);
 }