GRPC Stream implementation of HeliumStream

blimp/common/proto/helium_service.proto

Index: blimp/common/proto/helium_service.proto
diff --git a/blimp/common/proto/common.proto b/blimp/common/proto/helium_service.proto
similarity index 55%
copy from blimp/common/proto/common.proto
copy to blimp/common/proto/helium_service.proto
index 2684302d65efa3c23ef949c266c2ec6081f20e77..d236d1318ddc1632c4ef20dee7ef54f00bb9e521 100644
--- a/blimp/common/proto/common.proto
+++ b/blimp/common/proto/helium_service.proto
@@ -1,13 +1,17 @@
 // 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.
-//
-// Message definitions shared across proto files.
 
-syntax = "proto2";
+syntax = "proto3";
 
 option optimize_for = LITE_RUNTIME;
 
 package blimp;
 
-message EmptyMessage {}
+message HeliumWrapper {
+  bytes serialized_helium_message = 1;
+}
+
+service HeliumService {
+  rpc Stream(stream HeliumWrapper) returns (stream HeliumWrapper) {}
+}