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

extensions/browser/api/cast_channel/cast_channel_api.cc

Index: extensions/browser/api/cast_channel/cast_channel_api.cc
diff --git a/extensions/browser/api/cast_channel/cast_channel_api.cc b/extensions/browser/api/cast_channel/cast_channel_api.cc
index cc16c39b29956d3f6314aebe906a220a6833339f..dc4da0f029862c045b7e8da623496221916810dd 100644
--- a/extensions/browser/api/cast_channel/cast_channel_api.cc
+++ b/extensions/browser/api/cast_channel/cast_channel_api.cc
@@ -379,8 +379,8 @@ bool CastChannelSendFunction::Prepare() {
     return false;
   }
   switch (params_->message.data->GetType()) {
-    case base::Value::TYPE_STRING:
-    case base::Value::TYPE_BINARY:
+    case base::Value::Type::STRING:
+    case base::Value::Type::BINARY:
       break;
     default:
       SetError("Invalid type of message_info.data");