arc: Restore broken auth code requst on demand.

chrome/browser/chromeos/arc/arc_auth_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 CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_
 #define CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_
 
 #include <memory>
 #include <ostream>
 #include <string>
@@ skipping 187 matching lines @@
   void StopAndEnableArc();
 
   // Removes the data if ARC is stopped. Otherwise, queue to remove the data
   // on ARC is stopped.
   void RemoveArcData();
 
   // Returns current page that has to be shown in OptIn UI.
   UIPage ui_page() const { return ui_page_; }
 
   // Returns current page status, relevant to the specific page.
-  const base::string16& ui_page_status() { return ui_page_status_; }
+  const base::string16& ui_page_status() const { return ui_page_status_; }
 
  private:
   void StartArc();
   void ShowUI(UIPage page, const base::string16& status);
   void CloseUI();
   void SetUIPage(UIPage page, const base::string16& status);
   void SetState(State state);
   void ShutdownBridge();
   void ShutdownBridgeAndCloseUI();
   void ShutdownBridgeAndShowUI(UIPage page, const base::string16& status);
   void OnOptInPreferenceChanged();
   void StartUI();
   void StartAndroidManagementClient();
   void CheckAndroidManagement(bool background_mode);
   void StartArcIfSignedIn();
   void OnArcDataRemoved(bool success);
   void OnArcSignInTimeout();
+  bool IsAuthCodeRequest() const;
 
   // Unowned pointer. Keeps current profile.
   Profile* profile_ = nullptr;
 
   // Registrar used to monitor ARC enabled state.
   PrefChangeRegistrar pref_change_registrar_;
 
   mojo::Binding<AuthHost> binding_;
   State state_ = State::NOT_INITIALIZED;
   base::ObserverList<Observer> observer_list_;
@@ skipping 18 matching lines @@
   base::WeakPtrFactory<ArcAuthService> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ArcAuthService);
 };
 
 std::ostream& operator<<(std::ostream& os, const ArcAuthService::State& state);
 
 }  // namespace arc
 
 #endif  // CHROME_BROWSER_CHROMEOS_ARC_ARC_AUTH_SERVICE_H_