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

chrome/renderer/extensions/cast_streaming_native_handler.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 "chrome/renderer/extensions/cast_streaming_native_handler.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 918 matching lines @@
     args.GetIsolate()->ThrowException(v8::Exception::TypeError(
         v8::String::NewFromUtf8(args.GetIsolate(), kInvalidAudioParams)));
     return;
   }
 
   std::unique_ptr<base::DictionaryValue> options;
   if (args.Length() >= 9) {
     std::unique_ptr<V8ValueConverter> converter(V8ValueConverter::create());
     std::unique_ptr<base::Value> options_value(
         converter->FromV8Value(args[8], context()->v8_context()));
-    if (!options_value->IsType(base::Value::TYPE_NULL)) {
+    if (!options_value->IsType(base::Value::Type::NONE)) {
       options = base::DictionaryValue::From(std::move(options_value));
       if (!options) {
         args.GetIsolate()->ThrowException(v8::Exception::TypeError(
             v8::String::NewFromUtf8(args.GetIsolate(), kUnableToConvertArgs)));
         return;
       }
     }
   }
 
   if (!options) {
@@ skipping 44 matching lines @@
     LOG(ERROR) << "Failed to add Cast audio track to media stream.";
   }
   if (!content::AddVideoTrackToMediaStream(std::move(video), true,  // is_remote
                                            true,  // is_readonly
                                            &web_stream)) {
     LOG(ERROR) << "Failed to add Cast video track to media stream.";
   }
 }
 
 }  // namespace extensions