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

remoting/host/it2me/it2me_native_messaging_host_unittest.cc

 // Copyright 2013 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 "remoting/host/it2me/it2me_native_messaging_host.h"
 
 #include <cstdint>
 #include <memory>
 #include <string>
 #include <utility>
@@ skipping 342 matching lines @@
     std::string message_json(length, '\0');
     read_result = output_read_file_.ReadAtCurrentPos(
         base::string_as_array(&message_json), length);
     if (read_result != static_cast<int>(length)) {
       LOG(ERROR) << "Message size (" << read_result
                  << ") doesn't match the header (" << length << ").";
       return nullptr;
     }
 
     std::unique_ptr<base::Value> message = base::JSONReader::Read(message_json);
-    if (!message || !message->IsType(base::Value::TYPE_DICTIONARY)) {
+    if (!message || !message->IsType(base::Value::Type::DICTIONARY)) {
       LOG(ERROR) << "Malformed message:" << message_json;
       return nullptr;
     }
 
     std::unique_ptr<base::DictionaryValue> result = base::WrapUnique(
         static_cast<base::DictionaryValue*>(message.release()));
     std::string type;
     // If this is a debug message log, ignore it, otherwise return it.
     if (!result->GetString("type", &type) ||
         type != LogMessageHandler::kDebugMessageTypeName) {
@@ skipping 258 matching lines @@
 }
 
 // Verify rejection if type is unrecognized.
 TEST_F(It2MeNativeMessagingHostTest, InvalidType) {
   base::DictionaryValue message;
   message.SetString("type", "xxx");
   TestBadRequest(message, true);
 }
 
 }  // namespace remoting