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

extensions/renderer/runtime_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/runtime_custom_bindings.h"
 
 #include <stdint.h>
 
 #include <memory>
 
@@ skipping 20 matching lines @@
                            base::Unretained(this)));
 }
 
 RuntimeCustomBindings::~RuntimeCustomBindings() {
 }
 
 void RuntimeCustomBindings::GetManifest(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   CHECK(context()->extension());
 
-  std::unique_ptr<content::V8ValueConverter> converter(
-      content::V8ValueConverter::create());
-  args.GetReturnValue().Set(converter->ToV8Value(
+  args.GetReturnValue().Set(content::V8ValueConverter::Create()->ToV8Value(
       context()->extension()->manifest()->value(), context()->v8_context()));
 }
 
 void RuntimeCustomBindings::GetExtensionViews(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   CHECK_EQ(args.Length(), 3);
   CHECK(args[0]->IsInt32());
   CHECK(args[1]->IsInt32());
   CHECK(args[2]->IsString());
 
@@ skipping 54 matching lines @@
       v8::Maybe<bool> maybe =
           v8_views->CreateDataProperty(v8_context, v8_index++, window);
       CHECK(maybe.IsJust() && maybe.FromJust());
     }
   }
 
   args.GetReturnValue().Set(v8_views);
 }
 
 }  // namespace extensions