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

extensions/renderer/messaging_bindings.cc

Index: extensions/renderer/messaging_bindings.cc
diff --git a/extensions/renderer/messaging_bindings.cc b/extensions/renderer/messaging_bindings.cc
index d58e43c4d02beebe3a2420b974a353a2247591a9..6d5246c72ba4eeee072caf58888b40fd0d12c32c 100644
--- a/extensions/renderer/messaging_bindings.cc
+++ b/extensions/renderer/messaging_bindings.cc
@@ -107,9 +107,8 @@ void DispatchOnConnectToScriptContext(
 
   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 =