Apply default wallpaper from customization manifest.

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 634 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();

[Nikita (slow), 2014/04/15 12:39:24]

Is this the only place where StartFetching() is called?

If OEM wallpaper download fails here for network connectivity reasons, when it
will retry?

[Alexander Alekseev, 2014/04/15 22:47:31]

As far as I understand, customization will be additionally fetched for each new
user on device, so customization will be fetched this of other way.

The problem is that
ServicesCustomizationDocument::GetInstance()->CheckAndApplyWallpaper()
should be called on each boot and I didn't find a proper place to
insert this call.

[Dmitry Polukhin, 2014/04/15 22:57:06]

I think it should be somewhere near ShowLoginWizard. But please make sure that
manifest is not fetched before ELUA accepted.

[Nikita (slow), 2014/04/16 18:16:21]

Please make sure that customization document header comment includes this
details i.e. when oem wallpaper fetch happens and when it will be retried.

Same goes about comparing existing URL with new one if it is changed.
Do we actually support now refetching manifest or not?

[Alexander Alekseev, 2014/04/16 23:19:59]

Done.

[Alexander Alekseev, 2014/04/16 23:19:59]

There is a comment on no-refetch policy here:
https://code.google.com/p/chromium/codesearch#chromium/src/chrome/browser/chr...

I've added another comment on this to the header file.

 
   // 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_->GetAutoEnrollmentController()->Start();
   host_->PrewarmAuthentication();
   NetworkPortalDetector::Get()->Enable(true);
 }
 
@@ skipping 346 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