base::ListValue::Append cleanup: pass unique_ptr instead of the released pointer.

chrome/browser/task_profiler/task_profiler_data_serializer.cc

 // Copyright (c) 2012 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 "chrome/browser/task_profiler/task_profiler_data_serializer.h"
 
 #include <memory>
+#include <utility>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/time/time.h"
 #include "base/tracked_objects.h"
 #include "chrome/common/chrome_content_client.h"
 #include "components/nacl/common/nacl_process_type.h"
 #include "content/public/common/process_type.h"
 #include "url/gurl.h"
@@ skipping 101 matching lines @@
 // static
 void TaskProfilerDataSerializer::ToValue(
     const ProcessDataPhaseSnapshot& process_data_phase,
     base::ProcessId process_id,
     metrics::ProfilerEventProto::TrackedObject::ProcessType process_type,
     base::DictionaryValue* dictionary) {
   std::unique_ptr<base::ListValue> tasks_list(new base::ListValue);
   for (const auto& task : process_data_phase.tasks) {
     std::unique_ptr<base::DictionaryValue> snapshot(new base::DictionaryValue);
     TaskSnapshotToValue(task, snapshot.get());
-    tasks_list->Append(snapshot.release());
+    tasks_list->Append(std::move(snapshot));
   }
   dictionary->Set("list", tasks_list.release());
 
   dictionary->SetInteger("process_id", process_id);
   dictionary->SetString("process_type", content::GetProcessTypeNameInEnglish(
                                             AsChromeProcessType(process_type)));
 }
 
 }  // namespace task_profiler