[Sync] Convert sessions/ directory to ModelEnumSet

chrome/browser/sync/js/js_sync_manager_observer_unittest.cc

 // Copyright (c) 2011 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/js/js_sync_manager_observer.h"
 
 #include "base/basictypes.h"
 #include "base/location.h"
 #include "base/message_loop.h"
 #include "base/values.h"
@@ skipping 59 matching lines @@
   js_sync_manager_observer_.OnEncryptionComplete();
   PumpLoop();
 }
 
 TEST_F(JsSyncManagerObserverTest, OnSyncCycleCompleted) {
   std::string download_progress_markers[syncable::MODEL_TYPE_COUNT];
   sessions::SyncSessionSnapshot snapshot(sessions::SyncerStatus(),
                                          sessions::ErrorCounters(),
                                          100,
                                          false,
-                                         syncable::ModelTypeBitSet(),
+                                         syncable::ModelEnumSet(),
                                          download_progress_markers,
                                          false,
                                          true,
                                          100,
                                          8,
                                          5,
                                          false,
                                          sessions::SyncSourceInfo(),
                                          0,
                                          base::Time::Now());
@@ skipping 123 matching lines @@
               HandleJsEvent("onEncryptedTypesChanged",
                             HasDetailsAsDictionary(expected_details)));
 
   js_sync_manager_observer_.OnEncryptedTypesChanged(
       encrypted_types, encrypt_everything);
   PumpLoop();
 }
 
 }  // namespace
 }  // namespace browser_sync