arc: ARC loading progress should not be shown when started from OOBE.

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

Index: chrome/browser/chromeos/login/screens/arc_terms_of_service_screen.cc
diff --git a/chrome/browser/chromeos/login/screens/arc_terms_of_service_screen.cc b/chrome/browser/chromeos/login/screens/arc_terms_of_service_screen.cc
index 1da3072521b8c3086275456054483620c1aaf631..2c8b448ef2454ac6057379d307cfa3b5e7f6b301 100644
--- a/chrome/browser/chromeos/login/screens/arc_terms_of_service_screen.cc
+++ b/chrome/browser/chromeos/login/screens/arc_terms_of_service_screen.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/browser/chromeos/login/screens/arc_terms_of_service_screen.h"
 
+#include "chrome/browser/chromeos/login/screens/arc_terms_of_service_screen_actor.h"
 #include "chrome/browser/chromeos/login/screens/base_screen_delegate.h"
 #include "chrome/browser/chromeos/login/wizard_controller.h"
 #include "chrome/browser/metrics/metrics_reporting_state.h"
@@ -20,12 +21,12 @@ ArcTermsOfServiceScreen::ArcTermsOfServiceScreen(
     : BaseScreen(base_screen_delegate), actor_(actor) {
   DCHECK(actor_);
   if (actor_)
-    actor_->SetDelegate(this);
+    actor_->AddObserver(this);
 }
 
 ArcTermsOfServiceScreen::~ArcTermsOfServiceScreen() {
   if (actor_)
-    actor_->SetDelegate(nullptr);
+    actor_->RemoveObserver(this);
 }
 
 void ArcTermsOfServiceScreen::Show() {
@@ -56,7 +57,8 @@ void ArcTermsOfServiceScreen::OnAccept() {
 void ArcTermsOfServiceScreen::ApplyTerms(bool accepted) {
   Profile* profile = ProfileManager::GetActiveUserProfile();
   profile->GetPrefs()->SetBoolean(prefs::kArcTermsAccepted, accepted);
-  profile->GetPrefs()->SetBoolean(prefs::kArcEnabled, accepted);
+  if (!profile->GetPrefs()->IsManagedPreference(prefs::kArcEnabled))
+    profile->GetPrefs()->SetBoolean(prefs::kArcEnabled, accepted);
 
   Finish(BaseScreenDelegate::ARC_TERMS_OF_SERVICE_FINISHED);
 }