Add protobuf definitions

Add protobuf definitions for binaryblob store, and change data types
to the generated class.

Signed-off-by: Kun Yi <kunyi@google.com>
Change-Id: I856a000c4a81c10bbbd1983d51712b4999a4e29e
diff --git a/test/handler_unittest.hpp b/test/handler_unittest.hpp
index c35c749..ded13eb 100644
--- a/test/handler_unittest.hpp
+++ b/test/handler_unittest.hpp
@@ -6,6 +6,8 @@
 #include <memory>
 #include <string>
 
+#include "binaryblob.pb.h"
+
 #include <gtest/gtest.h>
 
 using ::testing::Contains;