Rewrite simple uses of base::ListValue::Append(base::Value*) on CrOS.

chrome/browser/chromeos/extensions/dictionary_event_router.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 "chrome/browser/chromeos/extensions/dictionary_event_router.h"
 
 #include <string>
 #include <utility>
 
 #include "base/json/json_writer.h"
@@ skipping 62 matching lines @@
 
   std::unique_ptr<base::ListValue> added_words(new base::ListValue());
   for (const std::string& word : dictionary_change.to_add())
     added_words->AppendString(word);
 
   std::unique_ptr<base::ListValue> removed_words(new base::ListValue());
   for (const std::string& word : dictionary_change.to_remove())
     removed_words->AppendString(word);
 
   std::unique_ptr<base::ListValue> args(new base::ListValue());
-  args->Append(added_words.release());
-  args->Append(removed_words.release());
+  args->Append(std::move(added_words));
+  args->Append(std::move(removed_words));
 
   // The router will only send the event to extensions that are listening.
   std::unique_ptr<extensions::Event> event(new extensions::Event(
       extensions::events::INPUT_METHOD_PRIVATE_ON_DICTIONARY_CHANGED,
       OnDictionaryChanged::kEventName, std::move(args)));
   event->restrict_to_browser_context = context_;
   router->BroadcastEvent(std::move(event));
 }
 
 }  // namespace chromeos