tracing: Make ConvertableToTraceFormat move-only scoped_ptr

ui/events/latency_info.h

Index: ui/events/latency_info.h
diff --git a/ui/events/latency_info.h b/ui/events/latency_info.h
index 77efe5f7be3146808ce3799ca478c8b893925a1c..3a20d99ac427fd4c42586233640aeb9ab2bf87bd 100644
--- a/ui/events/latency_info.h
+++ b/ui/events/latency_info.h
@@ -215,9 +215,9 @@ class EVENTS_BASE_EXPORT LatencyInfo {
                                          const char* trace_name_str);
 
   // Converts latencyinfo into format that can be dumped into trace buffer.
-  scoped_refptr<base::trace_event::ConvertableToTraceFormat> AsTraceableData();
-  scoped_refptr<base::trace_event::ConvertableToTraceFormat>
-    CoordinatesAsTraceableData();
+  scoped_ptr<base::trace_event::ConvertableToTraceFormat> AsTraceableData();
+  scoped_ptr<base::trace_event::ConvertableToTraceFormat>
+  CoordinatesAsTraceableData();
 
   // Shown as part of the name of the trace event for this LatencyInfo.
   // String is empty if no tracing is enabled.