tracing: Make ConvertableToTraceFormat move-only scoped_ptr

components/exo/sub_surface.cc

Index: components/exo/sub_surface.cc
diff --git a/components/exo/sub_surface.cc b/components/exo/sub_surface.cc
index 6cdca0705ddee7376d39edad3dc49abf0efb4c5b..e4a13546afe3b03782dafc734a689048818d9093 100644
--- a/components/exo/sub_surface.cc
+++ b/components/exo/sub_surface.cc
@@ -80,10 +80,8 @@ void SubSurface::SetCommitBehavior(bool synchronized) {
   is_synchronized_ = synchronized;
 }
 
-scoped_refptr<base::trace_event::TracedValue> SubSurface::AsTracedValue()
-    const {
-  scoped_refptr<base::trace_event::TracedValue> value =
-      new base::trace_event::TracedValue;
+scoped_ptr<base::trace_event::TracedValue> SubSurface::AsTracedValue() const {
+  auto value = make_scoped_ptr(new base::trace_event::TracedValue);
   value->SetBoolean("is_synchronized", is_synchronized_);
   return value;
 }