[SyncFS] Add browser_tests to test authentication state of SyncFS

chrome/browser/sync_file_system/sync_file_system_service.cc

 // Copyright (c) 2012 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/sync_file_system_service.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/format_macros.h"
@@ skipping 378 matching lines @@
   promoting_demoted_changes_ = false;
   CheckIfIdle();
 }
 
 void SyncFileSystemService::CheckIfIdle() {
   if (promoting_demoted_changes_)
     return;
 
   for (size_t i = 0; i < remote_sync_runners_.size(); ++i) {
     SyncServiceState service_state = remote_sync_runners_[i]->GetServiceState();
-    if (service_state != SYNC_SERVICE_RUNNING &&
-        service_state != SYNC_SERVICE_TEMPORARY_UNAVAILABLE)
+    if (service_state != SYNC_SERVICE_RUNNING)
       continue;
 
     if (remote_sync_runners_[i]->pending_changes())
       return;
   }
 
   for (size_t i = 0; i < local_sync_runners_.size(); ++i) {
     SyncServiceState service_state = local_sync_runners_[i]->GetServiceState();
-    if (service_state != SYNC_SERVICE_RUNNING &&
-        service_state != SYNC_SERVICE_TEMPORARY_UNAVAILABLE)
+    if (service_state != SYNC_SERVICE_RUNNING)
       continue;
 
     if (local_sync_runners_[i]->pending_changes())
       return;
   }
 
   if (idle_callback_.is_null())
     return;
 
   base::Closure callback = idle_callback_;
@@ skipping 326 matching lines @@
        iter != remote_sync_runners_.end(); ++iter)
     ((*iter)->*method)();
 }
 
 RemoteFileSyncService* SyncFileSystemService::GetRemoteService(
     const GURL& origin) {
   return remote_service_.get();
 }
 
 }  // namespace sync_file_system