Make base::Value::TYPE a scoped enum.

remoting/host/it2me/it2me_native_messaging_host.cc

Index: remoting/host/it2me/it2me_native_messaging_host.cc
diff --git a/remoting/host/it2me/it2me_native_messaging_host.cc b/remoting/host/it2me/it2me_native_messaging_host.cc
index 5d87e2087afa3cc5eeaa4f15dfc40ad5f8f60768..41e8f75ea95aa527f1a0d74c2ed1b56d8125e0ce 100644
--- a/remoting/host/it2me/it2me_native_messaging_host.cc
+++ b/remoting/host/it2me/it2me_native_messaging_host.cc
@@ -119,7 +119,7 @@ void It2MeNativeMessagingHost::OnMessage(const std::string& message) {
 
   std::unique_ptr<base::DictionaryValue> response(new base::DictionaryValue());
   std::unique_ptr<base::Value> message_value = base::JSONReader::Read(message);
-  if (!message_value->IsType(base::Value::TYPE_DICTIONARY)) {
+  if (!message_value->IsType(base::Value::Type::DICTIONARY)) {
     LOG(ERROR) << "Received a message that's not a dictionary.";
     client_->CloseChannel(std::string());
     return;