[Sync] Made some sync session member functions const

chrome/browser/sync/engine/get_commit_ids_command.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/engine/get_commit_ids_command.h"
 
 #include <set>
 #include <utility>
 #include <vector>
 
@@ skipping 31 matching lines @@
   if (cryptographer) {
     encrypted_types_ = cryptographer->GetEncryptedTypes();
     passphrase_missing_ = cryptographer->has_pending_keys();
   };
   // We filter out all unready entries from the set of unsynced handles to
   // ensure we don't trigger useless sync cycles attempting to retry due to
   // there being work to do. (see ScheduleNextSync in sync_scheduler)
   FilterUnreadyEntries(session->write_transaction(),
                        &all_unsynced_handles);
 
-  StatusController* status = session->status_controller();
+  StatusController* status = session->mutable_status_controller();
   status->set_unsynced_handles(all_unsynced_handles);
   BuildCommitIds(status->unsynced_handles(), session->write_transaction(),
                  session->routing_info());
 
   const vector<syncable::Id>& verified_commit_ids =
       ordered_commit_set_->GetAllCommitIds();
 
   for (size_t i = 0; i < verified_commit_ids.size(); i++)
     VLOG(1) << "Debug commit batch result:" << verified_commit_ids[i];
 
@@ skipping 262 matching lines @@
   // delete trees.
 
   // Add moves and creates, and prepend their uncommitted parents.
   AddCreatesAndMoves(unsynced_handles, write_transaction, routes);
 
   // Add all deletes.
   AddDeletes(unsynced_handles, write_transaction);
 }
 
 }  // namespace browser_sync