Add ArcEnabled policy implementation

chrome/browser/chromeos/arc/arc_auth_service.cc

Index: chrome/browser/chromeos/arc/arc_auth_service.cc
diff --git a/chrome/browser/chromeos/arc/arc_auth_service.cc b/chrome/browser/chromeos/arc/arc_auth_service.cc
index 5085333acddee206667dcc1f4f150ced07be8b16..87592285155e5b6d1e54e441b6437e73df50833b 100644
--- a/chrome/browser/chromeos/arc/arc_auth_service.cc
+++ b/chrome/browser/chromeos/arc/arc_auth_service.cc
@@ -134,19 +134,11 @@ void ArcAuthService::OnPrimaryUserProfilePrepared(Profile* profile) {
       profile_, GURL(site_url));
   CHECK(storage_partition_);
 
-  // In case UI is disabled we assume that ARC is opted-in.
-  if (!IsOptInVerificationDisabled()) {
-    pref_change_registrar_.Init(profile_->GetPrefs());
-    pref_change_registrar_.Add(
-        prefs::kArcEnabled,
-        base::Bind(&ArcAuthService::OnOptInPreferenceChanged,
-                   base::Unretained(this)));
-    OnOptInPreferenceChanged();
-  } else {
-    auth_code_.clear();
-    ArcBridgeService::Get()->HandleStartup();
-    SetState(State::ENABLE);
-  }
+  pref_change_registrar_.Init(profile_->GetPrefs());
+  pref_change_registrar_.Add(
+      prefs::kArcEnabled, base::Bind(&ArcAuthService::OnOptInPreferenceChanged,
+                                     base::Unretained(this)));
+  OnOptInPreferenceChanged();
 }
 
 void ArcAuthService::Shutdown() {
@@ -196,10 +188,15 @@ void ArcAuthService::OnOptInPreferenceChanged() {
 
   if (profile_->GetPrefs()->GetBoolean(prefs::kArcEnabled)) {
     if (state_ != State::ENABLE) {
-      CloseUI();
       auth_code_.clear();
-      SetState(State::FETCHING_CODE);
-      FetchAuthCode();
+      if (!IsOptInVerificationDisabled()) {
+        CloseUI();
+        SetState(State::FETCHING_CODE);
+        FetchAuthCode();
+      } else {
+        ArcBridgeService::Get()->HandleStartup();
+        SetState(State::ENABLE);
+      }
     }
   } else {
     ShutdownBridgeAndCloseUI();