If customization includes default wallpaper, download and apply it.

chrome/browser/chromeos/login/wizard_controller.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/chromeos/login/wizard_controller.h"
 
 #include <signal.h>
 #include <stdlib.h>
 #include <sys/types.h>
 
@@ skipping 298 matching lines @@
   SetStatusAreaVisible(false);
   SetCurrentScreen(GetNetworkScreen());
 }
 
 void WizardController::ShowLoginScreen(const LoginScreenContext& context) {
   if (!time_eula_accepted_.is_null()) {
     base::TimeDelta delta = base::Time::Now() - time_eula_accepted_;
     UMA_HISTOGRAM_MEDIUM_TIMES("OOBE.EULAToSignInTime", delta);
   }
   VLOG(1) << "Showing login screen.";
+  // Restart fetch if previous attempt failed.
+  ServicesCustomizationDocument::GetInstance()->StartFetching();
   SetStatusAreaVisible(true);
   host_->StartSignInScreen(context);
   smooth_show_timer_.Stop();
   oobe_display_ = NULL;
   login_screen_started_ = true;
 }
 
 void WizardController::ResumeLoginScreen() {
   VLOG(1) << "Resuming login screen.";
   SetStatusAreaVisible(true);
@@ skipping 311 matching lines @@
 void WizardController::StartTimezoneResolve() const {
   LoginLocationMonitor::InstallLocationCallback(
       base::TimeDelta::FromSeconds(kResolveTimeZoneTimeoutSeconds));
 }
 
 void WizardController::PerformPostEulaActions() {
   DelayNetworkCall(
       base::Bind(&WizardController::StartTimezoneResolve,
                  weak_factory_.GetWeakPtr()),
       base::TimeDelta::FromMilliseconds(kDefaultNetworkRetryDelayMS));
+  ServicesCustomizationDocument::GetInstance()->StartFetching();
 
   // Now that EULA has been accepted (for official builds), enable portal check.
   // ChromiumOS builds would go though this code path too.
   NetworkHandler::Get()->network_state_handler()->SetCheckPortalList(
       NetworkStateHandler::kDefaultCheckPortalList);
   host_->CheckForAutoEnrollment();
   host_->PrewarmAuthentication();
   NetworkPortalDetector::Get()->Enable(true);
 }
 
@@ skipping 385 matching lines @@
 TimeZoneProvider* WizardController::GetTimezoneProvider() {
   if (!timezone_provider_) {
     timezone_provider_.reset(
         new TimeZoneProvider(g_browser_process->system_request_context(),
                              DefaultTimezoneProviderURL()));
   }
   return timezone_provider_.get();
 }
 
 }  // namespace chromeos