Implement 'Do Not Track' header

chrome/browser/profiles/profile_impl_io_data.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/profiles/profile_impl_io_data.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/threading/worker_pool.h"
 #include "chrome/browser/api/prefs/pref_member.h"
 #include "chrome/browser/io_thread.h"
 #include "chrome/browser/net/about_protocol_handler.h"
 #include "chrome/browser/net/chrome_net_log.h"
-#include "chrome/browser/net/chrome_network_delegate.h"
 #include "chrome/browser/net/clear_on_exit_policy.h"
 #include "chrome/browser/net/connect_interceptor.h"
 #include "chrome/browser/net/http_server_properties_manager.h"
 #include "chrome/browser/net/predictor.h"
 #include "chrome/browser/net/sqlite_persistent_cookie_store.h"
 #include "chrome/browser/net/sqlite_server_bound_cert_store.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/webui/chrome_url_data_manager_backend.h"
 #include "chrome/common/chrome_constants.h"
@@ skipping 238 matching lines @@
 void ProfileImplIOData::Handle::LazyInitialize() const {
   if (initialized_)
     return;
 
   // Set initialized_ to true at the beginning in case any of the objects
   // below try to get the ResourceContext pointer.
   initialized_ = true;
   PrefService* pref_service = profile_->GetPrefs();
   io_data_->set_http_server_properties_manager(
       new chrome_browser_net::HttpServerPropertiesManager(pref_service));
-  ChromeNetworkDelegate::InitializeReferrersEnabled(
-      io_data_->enable_referrers(), pref_service);
   io_data_->session_startup_pref()->Init(
       prefs::kRestoreOnStartup, pref_service, NULL);
   io_data_->session_startup_pref()->MoveToThread(BrowserThread::IO);
 #if defined(ENABLE_SAFE_BROWSING)
   io_data_->safe_browsing_enabled()->Init(prefs::kSafeBrowsingEnabled,
       pref_service, NULL);
   io_data_->safe_browsing_enabled()->MoveToThread(BrowserThread::IO);
 #endif
   io_data_->InitializeOnUIThread(profile_);
 }
@@ skipping 374 matching lines @@
 void ProfileImplIOData::ClearNetworkingHistorySinceOnIOThread(
     base::Time time) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   LazyInitialize();
 
   DCHECK(transport_security_state());
   transport_security_state()->DeleteSince(time);
   DCHECK(http_server_properties_manager());
   http_server_properties_manager()->Clear();
 }