tracing: Make ConvertableToTraceFormat move-only scoped_ptr

components/exo/buffer.cc

 // 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.
 
 #include "components/exo/buffer.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 #include <stdint.h>
@@ skipping 435 matching lines @@
   return cc::SingleReleaseCallback::Create(
       base::Bind(&Buffer::Texture::Release, base::Unretained(texture),
                  base::Bind(&Buffer::ReleaseTexture, AsWeakPtr(),
                             base::Passed(&texture_))));
 }
 
 gfx::Size Buffer::GetSize() const {
   return gpu_memory_buffer_->GetSize();
 }
 
-scoped_refptr<base::trace_event::TracedValue> Buffer::AsTracedValue() const {
-  scoped_refptr<base::trace_event::TracedValue> value =
-      new base::trace_event::TracedValue;
+scoped_ptr<base::trace_event::TracedValue> Buffer::AsTracedValue() const {
+  scoped_ptr<base::trace_event::TracedValue> value(
+      new base::trace_event::TracedValue());
   gfx::Size size = gpu_memory_buffer_->GetSize();
   value->SetInteger("width", size.width());
   value->SetInteger("height", size.height());
   value->SetInteger("format",
                     static_cast<int>(gpu_memory_buffer_->GetFormat()));
   return value;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // Buffer, private:
@@ skipping 13 matching lines @@
 }
 
 void Buffer::ReleaseContentsTexture(scoped_ptr<Texture> texture) {
   TRACE_EVENT0("exo", "Buffer::ReleaseContentsTexture");
 
   contents_texture_ = std::move(texture);
   Release();
 }
 
 }  // namespace exo