Update sync/, sql/, and printing/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

sync/engine/model_changing_syncer_command.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 "sync/engine/model_changing_syncer_command.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "sync/sessions/status_controller.h"
 #include "sync/sessions/sync_session.h"
 
 namespace syncer {
 
 SyncerError ModelChangingSyncerCommand::ExecuteImpl(
     sessions::SyncSession* session) {
   work_session_ = session;
   SyncerError result = SYNCER_OK;
 
   const std::set<ModelSafeGroup>& groups_to_change =
       GetGroupsToChange(*work_session_);
   for (size_t i = 0; i < session->context()->workers().size(); ++i) {
-    ModelSafeWorker* worker = session->context()->workers()[i];
+    ModelSafeWorker* worker = session->context()->workers()[i].get();
     ModelSafeGroup group = worker->GetModelSafeGroup();
     // Skip workers whose group isn't active.
     if (groups_to_change.count(group) == 0u) {
       DVLOG(2) << "Skipping worker for group "
                << ModelSafeGroupToString(group);
       continue;
     }
 
     sessions::StatusController* status =
         work_session_->mutable_status_controller();
     sessions::ScopedModelSafeGroupRestriction r(status, group);
     WorkCallback c = base::Bind(
         &ModelChangingSyncerCommand::StartChangingModel,
         // We wait until the callback is executed. So it is safe to use
         // unretained.
         base::Unretained(this));
 
     SyncerError this_worker_result = worker->DoWorkAndWaitUntilDone(c);
     // TODO(rlarocque): Figure out a better way to deal with errors from
     // multiple models at once.  See also: crbug.com/109422.
     if (this_worker_result != SYNCER_OK)
       result = this_worker_result;
   }
 
   return result;
 }
 
 }  // namespace syncer