Add IsAuthenticated() method to SigninManager.

chrome/browser/sync_file_system/drive_backend/sync_engine.cc

 // 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.
 
 #include "chrome/browser/sync_file_system/drive_backend/sync_engine.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
@@ skipping 256 matching lines @@
   drive_service_.reset();
   drive_uploader_wrapper_.reset();
   drive_uploader_.reset();
   remote_change_processor_wrapper_.reset();
   callback_tracker_.AbortAll();
 }
 
 void SyncEngine::Initialize() {
   Reset();
 
-  if (!signin_manager_ ||
-      signin_manager_->GetAuthenticatedAccountId().empty())
+  if (!signin_manager_ || !signin_manager_->IsAuthenticated())
     return;
 
   DCHECK(drive_service_factory_);
   scoped_ptr<drive::DriveServiceInterface> drive_service =
       drive_service_factory_->CreateDriveService(
           token_service_, request_context_.get(), drive_task_runner_.get());
   scoped_ptr<drive::DriveUploaderInterface> drive_uploader(
       new drive::DriveUploader(drive_service.get(), drive_task_runner_.get()));
 
   InitializeInternal(drive_service.Pass(), drive_uploader.Pass(),
@@ skipping 84 matching lines @@
 
 void SyncEngine::AddFileStatusObserver(FileStatusObserver* observer) {
   file_status_observers_.AddObserver(observer);
 }
 
 void SyncEngine::RegisterOrigin(const GURL& origin,
                                 const SyncStatusCallback& callback) {
   if (!sync_worker_) {
     // TODO(tzik): Record |origin| and retry the registration after late
     // sign-in.  Then, return SYNC_STATUS_OK.
-    if (!signin_manager_ ||
-        signin_manager_->GetAuthenticatedAccountId().empty())
+    if (!signin_manager_ || !signin_manager_->IsAuthenticated())
       callback.Run(SYNC_STATUS_AUTHENTICATION_FAILED);
     else
       callback.Run(SYNC_STATUS_ABORT);
     return;
   }
 
   SyncStatusCallback relayed_callback = RelayCallbackToCurrentThread(
       FROM_HERE, base::Bind(&DidRegisterOrigin, base::TimeTicks::Now(),
                             TrackCallback(callback)));
 
@@ skipping 387 matching lines @@
 
 SyncStatusCallback SyncEngine::TrackCallback(
     const SyncStatusCallback& callback) {
   return callback_tracker_.Register(
       base::Bind(callback, SYNC_STATUS_ABORT),
       callback);
 }
 
 }  // namespace drive_backend
 }  // namespace sync_file_system