Change base::Value::ListStorage to std::vector<base::Value>

extensions/renderer/argument_spec.cc

Index: extensions/renderer/argument_spec.cc
diff --git a/extensions/renderer/argument_spec.cc b/extensions/renderer/argument_spec.cc
index b0cb7c3aa46abed98e0d562bc71ac172be73aa28..18367145d9e1073b5f93ff2e02f437c45a6ea312 100644
--- a/extensions/renderer/argument_spec.cc
+++ b/extensions/renderer/argument_spec.cc
@@ -60,7 +60,7 @@ void ArgumentSpec::InitializeType(const base::DictionaryValue* dict) {
       type_ = ArgumentType::CHOICES;
       choices_.reserve(choices->GetSize());
       for (const auto& choice : *choices)
-        choices_.push_back(base::MakeUnique<ArgumentSpec>(*choice));
+        choices_.push_back(base::MakeUnique<ArgumentSpec>(choice));
       return;
     }
   }