* Parse stream protocol handler
* Pipe node stream to mojo
* Merge the parser for headers
* Add ToDict helper to simplify code
* Simplify dispatching logic
* Add an experimental API for returning any type of response
* Fix subscribing event
* URL loaders' lifetime is independent of the factory
* HandleError helper is no longer needed
* Rename "SendResponse" => "StartLoading" to follow naming conventions
* Delete when connection error happens
* Fix cpplint warning
