Use std::unique_ptr for base::DictionaryValue and base::ListValue's internal store.

extensions/renderer/dispatcher.cc

Index: extensions/renderer/dispatcher.cc
diff --git a/extensions/renderer/dispatcher.cc b/extensions/renderer/dispatcher.cc
index ab770ca4cacf170aa6d43859338bea7e45ac4d82..695e7f5a98088740828503fb1647e170b2e48ab3 100644
--- a/extensions/renderer/dispatcher.cc
+++ b/extensions/renderer/dispatcher.cc
@@ -175,9 +175,8 @@ void CallModuleMethod(const std::string& module_name,
       content::V8ValueConverter::create());
 
   std::vector<v8::Local<v8::Value>> arguments;
-  for (base::ListValue::const_iterator it = args->begin(); it != args->end();
-       ++it) {
-    arguments.push_back(converter->ToV8Value(*it, context->v8_context()));
+  for (const auto& arg : *args) {
+    arguments.push_back(converter->ToV8Value(arg.get(), context->v8_context()));
   }
 
   context->module_system()->CallModuleMethod(