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

chrome/browser/speech/extension_api/tts_engine_extension_api.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/speech/extension_api/tts_engine_extension_api.h"
 
 #include <stddef.h>
 #include <string>
 #include <utility>
 
@@ skipping 171 matching lines @@
   }
 
   // Add the voice name and language to the options if they're not
   // already there, since they might have been picked by the TTS controller
   // rather than directly by the client that requested the speech.
   if (!options->HasKey(constants::kVoiceNameKey))
     options->SetString(constants::kVoiceNameKey, voice.name);
   if (!options->HasKey(constants::kLangKey))
     options->SetString(constants::kLangKey, voice.lang);
 
-  args->Append(options.release());
+  args->Append(std::move(options));
   args->AppendInteger(utterance->id());
 
   std::string json;
   base::JSONWriter::Write(*args, &json);
 
   std::unique_ptr<extensions::Event> event(
       new extensions::Event(extensions::events::TTS_ENGINE_ON_SPEAK,
                             tts_engine_events::kOnSpeak, std::move(args)));
   Profile* profile = Profile::FromBrowserContext(utterance->browser_context());
   event->restrict_to_browser_context = profile;
@@ skipping 124 matching lines @@
         utterance_id, TTS_EVENT_PAUSE, char_index, std::string());
   } else if (event_type == constants::kEventTypeResume) {
     controller->OnTtsEvent(
         utterance_id, TTS_EVENT_RESUME, char_index, std::string());
   } else {
     EXTENSION_FUNCTION_VALIDATE(false);
   }
 
   return true;
 }