tracing: Make ConvertableToTraceFormat move-only scoped_ptr

components/exo/shell_surface.h

 // Copyright 2015 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 COMPONENTS_EXO_SHELL_SURFACE_H_
 #define COMPONENTS_EXO_SHELL_SURFACE_H_
 
 #include <string>
 
 #include "ash/wm/window_state_observer.h"
@@ skipping 81 matching lines @@
 
   // Set geometry for surface. The geometry represents the "visible bounds"
   // for the surface from the user's perspective.
   void SetGeometry(const gfx::Rect& geometry);
 
   // Sets the main surface for the window.
   static void SetMainSurface(aura::Window* window, Surface* surface);
   static Surface* GetMainSurface(const aura::Window* window);
 
   // Returns a trace value representing the state of the surface.
-  scoped_refptr<base::trace_event::TracedValue> AsTracedValue() const;
+  scoped_ptr<base::trace_event::TracedValue> AsTracedValue() const;
 
   // Overridden from SurfaceDelegate:
   void OnSurfaceCommit() override;
   bool IsSurfaceSynchronized() const override;
 
   // Overridden from SurfaceObserver:
   void OnSurfaceDestroying(Surface* surface) override;
 
   // Overridden from views::WidgetDelegate:
   base::string16 GetWindowTitle() const override;
@@ skipping 33 matching lines @@
   base::Closure close_callback_;
   base::Closure surface_destroyed_callback_;
   ConfigureCallback configure_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellSurface);
 };
 
 }  // namespace exo
 
 #endif  // COMPONENTS_EXO_SHELL_SURFACE_H_