tracing: Make ConvertableToTraceFormat move-only scoped_ptr

base/trace_event/trace_config.cc

 // Copyright (c) 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 "base/trace_event/trace_config.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 45 matching lines @@
     MemoryDumpLevelOfDetail::DETAILED};
 const TraceConfig::MemoryDumpTriggerConfig kDefaultLightMemoryDumpTrigger = {
     250,  // periodic_interval_ms
     MemoryDumpLevelOfDetail::LIGHT};
 
 class ConvertableTraceConfigToTraceFormat
     : public base::trace_event::ConvertableToTraceFormat {
  public:
   explicit ConvertableTraceConfigToTraceFormat(const TraceConfig& trace_config)
       : trace_config_(trace_config) {}
+  ~ConvertableTraceConfigToTraceFormat() override {}
   void AppendAsTraceFormat(std::string* out) const override {
     out->append(trace_config_.ToString());
   }
 
- protected:
-  ~ConvertableTraceConfigToTraceFormat() override {}
-
  private:
   const TraceConfig trace_config_;
 };
 
 }  // namespace
 
 TraceConfig::TraceConfig() {
   InitializeDefault();
 }
 
@@ skipping 68 matching lines @@
 std::string TraceConfig::ToString() const {
   base::DictionaryValue dict;
   ToDict(dict);
 
   std::string json;
   base::JSONWriter::Write(dict, &json);
 
   return json;
 }
 
-scoped_refptr<ConvertableToTraceFormat>
-TraceConfig::AsConvertableToTraceFormat() const {
-  return new ConvertableTraceConfigToTraceFormat(*this);
+scoped_ptr<ConvertableToTraceFormat> TraceConfig::AsConvertableToTraceFormat()
+    const {
+  return make_scoped_ptr(new ConvertableTraceConfigToTraceFormat(*this));
 }
 
 std::string TraceConfig::ToCategoryFilterString() const {
   std::string filter_string;
   WriteCategoryFilterString(included_categories_, &filter_string, true);
   WriteCategoryFilterString(disabled_categories_, &filter_string, true);
   WriteCategoryFilterString(excluded_categories_, &filter_string, false);
   WriteCategoryFilterString(synthetic_delays_, &filter_string);
   return filter_string;
 }
@@ skipping 488 matching lines @@
           str.at(0) == ' ' ||
           str.at(str.length() - 1) == ' ';
 }
 
 bool TraceConfig::HasIncludedPatterns() const {
   return !included_categories_.empty();
 }
 
 }  // namespace trace_event
 }  // namespace base