Transmit a X-Chrome-UMA-Enabled bit to Google domains from clients that have UMA enabled.

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 421 matching lines @@
   extensions_request_context_ = new ChromeURLRequestContext;
 
   chrome_url_data_manager_backend_.reset(new ChromeURLDataManagerBackend);
 
   network_delegate_.reset(new ChromeNetworkDelegate(
         io_thread_globals->extension_event_router_forwarder.get(),
         profile_params_->extension_info_map,
         url_blacklist_manager_.get(),
         profile_params_->profile,
         profile_params_->cookie_settings,
-        &enable_referrers_));
+        profile_params_->is_incognito ? ChromeNetworkDelegate::INCOGNITO :
+                                        ChromeNetworkDelegate::NORMAL,
+        &enable_referrers_,
+        &enable_metrics_));
 
   fraudulent_certificate_reporter_.reset(
       new chrome_browser_net::ChromeFraudulentCertificateReporter(
           main_request_context_));
 
   proxy_service_.reset(
       ProxyServiceFactory::CreateProxyService(
           io_thread->net_log(),
           io_thread_globals->proxy_script_fetcher_context.get(),
           profile_params_->proxy_config_service.release(),
@@ skipping 58 matching lines @@
   context->set_is_incognito(profile_params_->is_incognito);
   context->set_accept_language(profile_params_->accept_language);
   context->set_accept_charset(profile_params_->accept_charset);
   context->set_referrer_charset(profile_params_->referrer_charset);
   context->set_ssl_config_service(profile_params_->ssl_config_service);
 }
 
 void ProfileIOData::ShutdownOnUIThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   enable_referrers_.Destroy();
+  enable_metrics_.Destroy();
   clear_local_state_on_exit_.Destroy();
   safe_browsing_enabled_.Destroy();
   session_startup_pref_.Destroy();
 #if defined(ENABLE_CONFIGURATION_POLICY)
   if (url_blacklist_manager_.get())
     url_blacklist_manager_->ShutdownOnUIThread();
 #endif
   bool posted = BrowserThread::DeleteSoon(BrowserThread::IO, FROM_HERE, this);
   if (!posted)
     delete this;
 }
 
 void ProfileIOData::set_server_bound_cert_service(
     net::ServerBoundCertService* server_bound_cert_service) const {
   server_bound_cert_service_.reset(server_bound_cert_service);
 }