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

extensions/renderer/messaging_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/messaging_bindings.h"
 
 #include <stdint.h>
 
 #include <map>
 #include <string>
@@ skipping 89 matching lines @@
   std::string target_extension_id = script_context->GetExtensionID();
   const Extension* extension = script_context->extension();
 
   v8::Local<v8::Value> tab = v8::Null(isolate);
   v8::Local<v8::Value> tls_channel_id_value = v8::Undefined(isolate);
   v8::Local<v8::Value> guest_process_id = v8::Undefined(isolate);
   v8::Local<v8::Value> guest_render_frame_routing_id = v8::Undefined(isolate);
 
   if (extension) {
     if (!source->tab.empty() && !extension->is_platform_app()) {
-      std::unique_ptr<content::V8ValueConverter> converter(
-          content::V8ValueConverter::create());
-      tab = converter->ToV8Value(&source->tab, script_context->v8_context());
+      tab = content::V8ValueConverter::Create()->ToV8Value(
+          &source->tab, script_context->v8_context());
     }
 
     ExternallyConnectableInfo* externally_connectable =
         ExternallyConnectableInfo::Get(extension);
     if (externally_connectable &&
         externally_connectable->accepts_tls_channel_id) {
       v8::Local<v8::String> v8_tls_channel_id;
       if (ToV8String(isolate, tls_channel_id.c_str(), &v8_tls_channel_id))
         tls_channel_id_value = v8_tls_channel_id;
     }
@@ skipping 422 matching lines @@
     ports_.erase(iter);
     port->Close(force_close);
   }
 }
 
 int MessagingBindings::GetNextJsId() {
   return next_js_id_++;
 }
 
 }  // namespace extensions