Add external data use observer

chrome/browser/profiles/profile_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_io_data.h"
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 1051 matching lines @@
 
 #if defined(ENABLE_CONFIGURATION_POLICY)
   network_delegate->set_url_blacklist_manager(url_blacklist_manager_.get());
 #endif
   network_delegate->set_profile(profile_params_->profile);
   network_delegate->set_profile_path(profile_params_->path);
   network_delegate->set_cookie_settings(profile_params_->cookie_settings.get());
   network_delegate->set_enable_do_not_track(&enable_do_not_track_);
   network_delegate->set_force_google_safe_search(&force_google_safesearch_);
   network_delegate->set_force_youtube_safety_mode(&force_youtube_safety_mode_);
-  network_delegate->set_data_use_aggregator(
-      io_thread_globals->data_use_aggregator.get(), IsOffTheRecord());
+  network_delegate->set_data_use_aggregator(io_thread->data_use_aggregator(),
+                                            IsOffTheRecord());
 
   // NOTE: Proxy service uses the default io thread network delegate, not the
   // delegate just created.
   proxy_service_ = ProxyServiceFactory::CreateProxyService(
       io_thread->net_log(),
       io_thread_globals->proxy_script_fetcher_context.get(),
       io_thread_globals->system_network_delegate.get(),
       profile_params_->proxy_config_service.Pass(), command_line,
       quick_check_enabled_.GetValue());
   transport_security_state_.reset(new net::TransportSecurityState());
@@ skipping 263 matching lines @@
           network_controller_handle_.GetController(), shared_session),
       shared_session->net_log(), backend,
       true /* set_up_quic_server_info */));
 }
 
 void ProfileIOData::SetCookieSettingsForTesting(
     content_settings::CookieSettings* cookie_settings) {
   DCHECK(!cookie_settings_.get());
   cookie_settings_ = cookie_settings;
 }