[autotest] Update login_OwnershipApi to use protobufs

client/site_tests/login_OwnershipApi/src/Makefile

Index: client/site_tests/login_OwnershipApi/src/Makefile
diff --git a/client/site_tests/login_OwnershipApi/src/Makefile b/client/site_tests/login_OwnershipApi/src/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..c73291578a19f37512a9dcc9755922d94bbf18b9
--- /dev/null
+++ b/client/site_tests/login_OwnershipApi/src/Makefile
@@ -0,0 +1,20 @@
+# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+ifndef SYSROOT
+  $(error Define SYSROOT)
+endif
+
+OUT_DIR ?= .
+PROTO_PATH = $(SYSROOT)/usr/include/proto
+PROTO_DEFS = $(PROTO_PATH)/device_management_backend.proto
+PROTO_BINDINGS = $(OUT_DIR)/device_management_backend_pb2.py
+
+all: $(PROTO_BINDINGS)
+
+$(PROTO_BINDINGS): $(PROTO_DEFS)
+	protoc --proto_path=$(PROTO_PATH) --python_out=$(OUT_DIR) $(PROTO_DEFS)
+
+clean:
+	rm -f $(PROTO_BINDINGS)