Add shim proto generation

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

api/shim/gen.go

@@ -0,0 +1,3 @@
+package shim
+
+//go:generate protoc -I.:../../vendor:../../vendor/github.com/gogo/protobuf:../../../../../..:/usr/local/include --gogoctrd_out=plugins=grpc,import_path=github.com/docker/containerd/api/shim,Mgogoproto/gogo.proto=github.com/gogo/protobuf/gogoproto,Mgoogle/protobuf/descriptor.proto=github.com/gogo/protobuf/protoc-gen-gogo/descriptor:. shim.proto

api/shim/shim.proto

@@ -6,10 +6,38 @@ import "google/protobuf/empty.proto";
 import "gogoproto/gogo.proto";
 
 service ShimService {
-	rpc Create(CreateRequest) returns (google.protobuf.Empty);
-	rpc Exec(ExecRequest) returns (google.protobuf.Empty);
-	rpc State(StateRequest) returns (StateResponse);
-	rpc Pty(PtyRequest) returns (google.protobuf.Empty);
+    rpc Create(CreateRequest) returns (CreateResponse);
+    rpc Start(StartRequest) returns (google.protobuf.Empty);
+    rpc Delete(DeleteRequest) returns (DeleteResponse);
+    rpc Exec(ExecRequest) returns (ExecResponse);
+    rpc Pty(PtyRequest) returns (google.protobuf.Empty);
+}
+
+message CreateRequest {
+
+}
+
+message CreateResponse {
+    uint32 pid = 1;
+}
+
+message StartRequest {
+}
+
+message DeleteRequest {
+
+}
+
+message DeleteResponse {
+    uint32 exit_status = 1;
+}
+
+message ExecRequest {
+
+}
+
+message ExecResponse {
+    uint32 pid = 1;
 }
 
 message PtyRequest {