ScreenObserver::(Set|Get)UsageStatisticsReporting() are extracted into EulaScreen::Delegate.

chrome/browser/chromeos/login/screens/eula_screen.cc

Index: chrome/browser/chromeos/login/screens/eula_screen.cc
diff --git a/chrome/browser/chromeos/login/screens/eula_screen.cc b/chrome/browser/chromeos/login/screens/eula_screen.cc
index 3454e05425cf7a320af4ddfb01e9a93b461bc336..19960231ed9e08b8984c9192fa7e546e5a90974d 100644
--- a/chrome/browser/chromeos/login/screens/eula_screen.cc
+++ b/chrome/browser/chromeos/login/screens/eula_screen.cc
@@ -27,6 +27,11 @@ EulaScreen::~EulaScreen() {
     actor_->SetDelegate(NULL);
 }
 
+void EulaScreen::SetDelegate(Delegate* delegate) {
+  DCHECK(delegate);
+  delegate_ = delegate;
+}
+
 void EulaScreen::PrepareToShow() {
   if (actor_)
     actor_->PrepareToShow();
@@ -68,7 +73,8 @@ GURL EulaScreen::GetOemEulaUrl() const {
 }
 
 void EulaScreen::OnExit(bool accepted, bool usage_stats_enabled) {
-  get_screen_observer()->SetUsageStatisticsReporting(usage_stats_enabled);
+  if (delegate_)
+    delegate_->SetUsageStatisticsReporting(usage_stats_enabled);
   get_screen_observer()->OnExit(accepted
                    ? ScreenObserver::EULA_ACCEPTED
                    : ScreenObserver::EULA_BACK);
@@ -90,7 +96,7 @@ void EulaScreen::OnPasswordFetched(const std::string& tpm_password) {
 }
 
 bool EulaScreen::IsUsageStatsEnabled() const {
-  return get_screen_observer()->GetUsageStatisticsReporting();
+  return delegate_ && delegate_->GetUsageStatisticsReporting();
 }
 
 void EulaScreen::OnActorDestroyed(EulaScreenActor* actor) {