Convert Pass()→std::move() in sync/

sync/syncable/directory.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 "sync/syncable/directory.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1142 matching lines @@
     // Add the position index if appropriate.  This must be done here (and not
     // in EntryKernel) because the EntryKernel does not have access to its
     // siblings.
     if (kernel->ShouldMaintainPosition() && !kernel->ref(IS_DEL)) {
       node->SetInteger("positionIndex", GetPositionIndex(trans, kernel));
     }
 
     nodes->Append(node.release());
   }
 
-  return nodes.Pass();
+  return nodes;
 }
 
 bool Directory::CheckInvariantsOnTransactionClose(
     syncable::BaseTransaction* trans,
     const MetahandleSet& modified_handles) {
   // NOTE: The trans may be in the process of being destructed.  Be careful if
   // you wish to call any of its virtual methods.
   switch (invariant_check_level_) {
     case FULL_DB_VERIFICATION: {
       MetahandleSet all_handles;
@@ skipping 404 matching lines @@
 Directory::Kernel* Directory::kernel() {
   return kernel_;
 }
 
 const Directory::Kernel* Directory::kernel() const {
   return kernel_;
 }
 
 }  // namespace syncable
 }  // namespace syncer