tracing: Make ConvertableToTraceFormat move-only scoped_ptr

cc/layers/layer_impl.h

 // Copyright 2011 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 CC_LAYERS_LAYER_IMPL_H_
 #define CC_LAYERS_LAYER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 601 matching lines @@
     return needs_push_properties() || descendant_needs_push_properties();
   }
 
   bool needs_push_properties() const { return needs_push_properties_; }
   bool descendant_needs_push_properties() const {
     return num_dependents_need_push_properties_ > 0;
   }
 
   virtual void RunMicroBenchmark(MicroBenchmarkImpl* benchmark);
 
-  virtual void SetDebugInfo(
-      scoped_refptr<base::trace_event::ConvertableToTraceFormat> other);
+  void SetDebugInfo(
+      scoped_ptr<base::trace_event::ConvertableToTraceFormat> debug_info);
 
   bool IsDrawnRenderSurfaceLayerListMember() const;
 
   void Set3dSortingContextId(int id);
   int sorting_context_id() { return sorting_context_id_; }
 
   void SetFrameTimingRequests(
       const std::vector<FrameTimingRequest>& frame_timing_requests);
   const std::vector<FrameTimingRequest>& frame_timing_requests() const {
     return frame_timing_requests_;
@@ skipping 220 matching lines @@
   // Manages animations for this layer.
   scoped_refptr<LayerAnimationController> layer_animation_controller_;
 
   std::vector<scoped_ptr<CopyOutputRequest>> copy_requests_;
 
   // Group of properties that need to be computed based on the layer tree
   // hierarchy before layers can be drawn.
   DrawProperties draw_properties_;
   PerformanceProperties<LayerImpl> performance_properties_;
 
-  scoped_refptr<base::trace_event::ConvertableToTraceFormat> debug_info_;
+  scoped_ptr<base::trace_event::ConvertableToTraceFormat> owned_debug_info_;
+  base::trace_event::ConvertableToTraceFormat* debug_info_;
   scoped_ptr<RenderSurfaceImpl> render_surface_;
 
   bool force_render_surface_;
 
   std::vector<FrameTimingRequest> frame_timing_requests_;
   bool frame_timing_requests_dirty_;
   bool visited_;
   bool layer_or_descendant_is_drawn_;
   // If true, the layer or one of its descendants has a touch handler.
   bool layer_or_descendant_has_touch_handler_;
   bool sorted_for_recursion_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_LAYER_IMPL_H_