[Content] Update V8ValueConverter::create to return a std::unique_ptr

extensions/renderer/i18n_custom_bindings.cc

 // Copyright 2014 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 "extensions/renderer/i18n_custom_bindings.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <vector>
@@ skipping 86 matching lines @@
   dict_value.SetBoolean("isReliable", is_reliable);
   std::unique_ptr<base::ListValue> languages_list(new base::ListValue());
   for (const auto& language : languages)
     languages_list->Append(language->ToDictionary());
   dict_value.Set("languages", std::move(languages_list));
 
   v8::Local<v8::Context> v8_context = context->v8_context();
   v8::Isolate* isolate = v8_context->GetIsolate();
   v8::EscapableHandleScope handle_scope(isolate);
 
-  std::unique_ptr<content::V8ValueConverter> converter(
-      content::V8ValueConverter::create());
-  v8::Local<v8::Value> result = converter->ToV8Value(&dict_value, v8_context);
+  v8::Local<v8::Value> result =
+      content::V8ValueConverter::Create()->ToV8Value(&dict_value, v8_context);
   return handle_scope.Escape(result);
 }
 
 #if BUILDFLAG(CLD_VERSION) == 2
 void InitDetectedLanguages(
     CLD2::Language* languages,
     int* percents,
     std::vector<std::unique_ptr<DetectedLanguage>>* detected_languages) {
   for (int i = 0; i < kCldNumLangs; i++) {
     std::string language_code;
@@ skipping 210 matching lines @@
   // Populate LanguageDetectionResult with prediction reliability, languages,
   // and the corresponding percentages.
   InitDetectedLanguages(lang_results, &result);
   args.GetReturnValue().Set(result.ToValue(context()));
 #else
 # error "CLD_VERSION must be 2 or 3"
 #endif
 }
 
 }  // namespace extensions