📰 Show the Sign In promo as a separate card from the section

components/ntp_snippets/remote/ntp_snippets_status_service.h

 // Copyright 2016 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.
 
 #ifndef COMPONENTS_NTP_SNIPPETS_REMOTE_NTP_SNIPPETS_STATUS_SERVICE_H_
 #define COMPONENTS_NTP_SNIPPETS_REMOTE_NTP_SNIPPETS_STATUS_SERVICE_H_
 
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/scoped_observer.h"
@@ skipping 35 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(NTPSnippetsStatusServiceTest, DisabledViaPref);
 
   // SigninManagerBase::Observer implementation
   void GoogleSigninSucceeded(const std::string& account_id,
                              const std::string& username,
                              const std::string& password) override;
   void GoogleSignedOut(const std::string& account_id,
                        const std::string& username) override;
 
   // Callback for the PrefChangeRegistrar.
-  void OnStateChanged();
+  void OnSnippetsEnabledChanged();
+
+  void OnStateChanged(DisabledReason new_disabled_reason);
 
   DisabledReason GetDisabledReasonFromDeps() const;
 
   DisabledReason disabled_reason_;
   DisabledReasonChangeCallback disabled_reason_change_callback_;
 
   bool require_signin_;
   SigninManagerBase* signin_manager_;
   PrefService* pref_service_;
 
   PrefChangeRegistrar pref_change_registrar_;
 
   // The observer for the SigninManager.
   ScopedObserver<SigninManagerBase, SigninManagerBase::Observer>
       signin_observer_;
 
   DISALLOW_COPY_AND_ASSIGN(NTPSnippetsStatusService);
 };
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_REMOTE_NTP_SNIPPETS_STATUS_SERVICE_H_