[Sync] Made some sync session member functions const

chrome/browser/sync/engine/sync_scheduler.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/sync_scheduler.h"
 
 #include <algorithm>
 #include <cstring>
 
 #include "base/bind.h"
@@ skipping 825 matching lines @@
 void SyncScheduler::ScheduleNextSync(const SyncSessionJob& old_job) {
   DCHECK_EQ(MessageLoop::current(), sync_loop_);
   DCHECK(!old_job.session->HasMoreToSync());
   // Note: |num_server_changes_remaining| > 0 here implies that we received a
   // broken response while trying to download all updates, because the Syncer
   // will loop until this value is exhausted. Also, if unsynced_handles exist
   // but HasMoreToSync is false, this implies that the Syncer determined no
   // forward progress was possible at this time (an error, such as an HTTP
   // 500, is likely to have occurred during commit).
   int num_server_changes_remaining =
-      old_job.session->status_controller()->num_server_changes_remaining();
+      old_job.session->status_controller().num_server_changes_remaining();
   size_t num_unsynced_handles =
-      old_job.session->status_controller()->unsynced_handles().size();
+      old_job.session->status_controller().unsynced_handles().size();
   const bool work_to_do =
       num_server_changes_remaining > 0 || num_unsynced_handles > 0;
   SVLOG(2) << "num server changes remaining: " << num_server_changes_remaining
            << ", num unsynced handles: " << num_unsynced_handles
            << ", syncer has work to do: " << work_to_do;
 
   AdjustPolling(&old_job);
 
   // TODO(tim): Old impl had special code if notifications disabled. Needed?
   if (!work_to_do) {
@@ skipping 328 matching lines @@
 
 #undef SVLOG_LOC
 
 #undef SVLOG
 
 #undef SLOG
 
 #undef ENUM_CASE
 
 }  // browser_sync