GRPC Stream implementation of HeliumStream

blimp/engine/app/switches.cc

 // Copyright 2016 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 "blimp/engine/app/switches.h"
 
 namespace blimp {
 namespace engine {
 
 const char kEnginePort[] = "engine-port";
 const char kAllowNonLocalhost[] = "allow-non-localhost";
+
+// Transport-specific options.
 const char kEngineTransport[] = "engine-transport";
+const char kTcpTransport[] = "tcp";
+const char kGrpcTransport[] = "grpc";
 
 }  // namespace engine
 }  // namespace blimp