[SyncFS] Support late authentication

chrome/browser/sync_file_system/drive_backend/sync_engine.h

 // Copyright 2013 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_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_ENGINE_H_
 #define CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_ENGINE_H_
 
 #include <set>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "chrome/browser/drive/drive_notification_observer.h"
 #include "chrome/browser/drive/drive_service_interface.h"
 #include "chrome/browser/sync_file_system/drive_backend/callback_tracker.h"
 #include "chrome/browser/sync_file_system/local_change_processor.h"
 #include "chrome/browser/sync_file_system/remote_file_sync_service.h"
 #include "chrome/browser/sync_file_system/sync_action.h"
 #include "chrome/browser/sync_file_system/sync_direction.h"
+#include "components/signin/core/browser/signin_manager_base.h"
 #include "net/base/network_change_notifier.h"
 
 class ExtensionServiceInterface;
 class ProfileOAuth2TokenService;
-class SigninManagerBase;
 
 namespace base {
 class SequencedTaskRunner;
 }
 
 namespace drive {
 class DriveServiceInterface;
 class DriveNotificationManager;
 class DriveUploaderInterface;
 }
@@ skipping 17 matching lines @@
 class MetadataDatabase;
 class RemoteChangeProcessorOnWorker;
 class RemoteChangeProcessorWrapper;
 class SyncTaskManager;
 class SyncWorkerInterface;
 
 class SyncEngine : public RemoteFileSyncService,
                    public LocalChangeProcessor,
                    public drive::DriveNotificationObserver,
                    public drive::DriveServiceObserver,
-                   public net::NetworkChangeNotifier::NetworkChangeObserver {
+                   public net::NetworkChangeNotifier::NetworkChangeObserver,
+                   public SigninManagerBase::Observer {
  public:
-  typedef Observer SyncServiceObserver;
+  typedef RemoteFileSyncService::Observer SyncServiceObserver;
 
   static scoped_ptr<SyncEngine> CreateForBrowserContext(
       content::BrowserContext* context,
       TaskLogger* task_logger);
   static void AppendDependsOnFactories(
       std::set<BrowserContextKeyedServiceFactory*>* factories);
 
   virtual ~SyncEngine();
   void Reset();
 
@@ skipping 48 matching lines @@
   virtual void OnPushNotificationEnabled(bool enabled) OVERRIDE;
 
   // drive::DriveServiceObserver overrides.
   virtual void OnReadyToSendRequests() OVERRIDE;
   virtual void OnRefreshTokenInvalid() OVERRIDE;
 
   // net::NetworkChangeNotifier::NetworkChangeObserver overrides.
   virtual void OnNetworkChanged(
       net::NetworkChangeNotifier::ConnectionType type) OVERRIDE;
 
-  void OnPendingFileListUpdated(int item_count);
-  void OnFileStatusChanged(const fileapi::FileSystemURL& url,
-                           SyncFileStatus file_status,
-                           SyncAction sync_action,
-                           SyncDirection direction);
-  void UpdateServiceState(RemoteServiceState state,
-                          const std::string& description);
+  // SigninManagerBase::Observer overrides.
+  virtual void GoogleSigninFailed(const GoogleServiceAuthError& error) OVERRIDE;
+  virtual void GoogleSigninSucceeded(const std::string& username,
+                                     const std::string& password) OVERRIDE;
+  virtual void GoogleSignedOut(const std::string& username) OVERRIDE;
 
  private:
   class WorkerObserver;
 
   friend class DriveBackendSyncTest;
   friend class SyncEngineTest;
 
   SyncEngine(base::SingleThreadTaskRunner* ui_task_runner,
              base::SequencedTaskRunner* worker_task_runner,
              base::SequencedTaskRunner* file_task_runner,
              base::SequencedTaskRunner* drive_task_runner,
              const base::FilePath& sync_file_system_dir,
              TaskLogger* task_logger,
              drive::DriveNotificationManager* notification_manager,
              ExtensionServiceInterface* extension_service,
              SigninManagerBase* signin_manager,
              ProfileOAuth2TokenService* token_service,
              net::URLRequestContextGetter* request_context,
              leveldb::Env* env_override);
 
+  // Called by WorkerObserver.
+  void OnPendingFileListUpdated(int item_count);
+  void OnFileStatusChanged(const fileapi::FileSystemURL& url,
+                           SyncFileStatus file_status,
+                           SyncAction sync_action,
+                           SyncDirection direction);
+  void UpdateServiceState(RemoteServiceState state,
+                          const std::string& description);
+
   SyncStatusCallback TrackCallback(const SyncStatusCallback& callback);
 
   scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner_;
   scoped_refptr<base::SequencedTaskRunner> worker_task_runner_;
   scoped_refptr<base::SequencedTaskRunner> file_task_runner_;
   scoped_refptr<base::SequencedTaskRunner> drive_task_runner_;
 
   const base::FilePath sync_file_system_dir_;
   TaskLogger* task_logger_;
 
@@ skipping 32 matching lines @@
   CallbackTracker callback_tracker_;
 
   base::WeakPtrFactory<SyncEngine> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(SyncEngine);
 };
 
 }  // namespace drive_backend
 }  // namespace sync_file_system
 
 #endif  // CHROME_BROWSER_SYNC_FILE_SYSTEM_DRIVE_BACKEND_SYNC_ENGINE_H_