tracing: Make ConvertableToTraceFormat move-only scoped_ptr

components/scheduler/base/task_queue_manager.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_RENDERER_SCHEDULER_BASE_TASK_QUEUE_MANAGER_H_
 #define CONTENT_RENDERER_SCHEDULER_BASE_TASK_QUEUE_MANAGER_H_
 
 #include <map>
 
 #include "base/atomic_sequence_num.h"
@@ skipping 183 matching lines @@
   internal::EnqueueOrder GetNextSequenceNumber();
 
   // Calls MaybeAdvanceTime on all time domains and returns true if one of them
   // was able to advance.
   bool TryAdvanceTimeDomains();
 
   void MaybeRecordTaskDelayHistograms(
       const internal::TaskQueueImpl::Task& pending_task,
       const internal::TaskQueueImpl* queue);
 
-  scoped_refptr<base::trace_event::ConvertableToTraceFormat>
+  scoped_ptr<base::trace_event::ConvertableToTraceFormat>
   AsValueWithSelectorResult(bool should_run,
                             internal::WorkQueue* selected_work_queue) const;
 
   std::set<TimeDomain*> time_domains_;
   scoped_ptr<RealTimeDomain> real_time_domain_;
 
   std::set<scoped_refptr<internal::TaskQueueImpl>> queues_;
 
   // We have to be careful when deleting a queue because some of the code uses
   // raw pointers and doesn't expect the rug to be pulled out from underneath.
@@ skipping 33 matching lines @@
   Observer* observer_;  // NOT OWNED
   scoped_refptr<DeletionSentinel> deletion_sentinel_;
   base::WeakPtrFactory<TaskQueueManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TaskQueueManager);
 };
 
 }  // namespace scheduler
 
 #endif  // CONTENT_RENDERER_SCHEDULER_BASE_TASK_QUEUE_MANAGER_H_