Updating grpc to 1.31.1 for cpp

Change-Id: I0e904d76eacfaddc4f1af598d7d076142dc492c3
diff --git a/cpp/dmi/sw_image.grpc.pb.h b/cpp/dmi/sw_image.grpc.pb.h
index 066e89f..9946afe 100644
--- a/cpp/dmi/sw_image.grpc.pb.h
+++ b/cpp/dmi/sw_image.grpc.pb.h
@@ -6,23 +6,25 @@
 
 #include "dmi/sw_image.pb.h"
 
-#include <grpc++/impl/codegen/async_stream.h>
-#include <grpc++/impl/codegen/async_unary_call.h>
-#include <grpc++/impl/codegen/method_handler_impl.h>
-#include <grpc++/impl/codegen/proto_utils.h>
-#include <grpc++/impl/codegen/rpc_method.h>
-#include <grpc++/impl/codegen/service_type.h>
-#include <grpc++/impl/codegen/status.h>
-#include <grpc++/impl/codegen/stub_options.h>
-#include <grpc++/impl/codegen/sync_stream.h>
-
-namespace grpc {
-class CompletionQueue;
-class Channel;
-class RpcService;
-class ServerCompletionQueue;
-class ServerContext;
-}  // namespace grpc
+#include <functional>
+#include <grpc/impl/codegen/port_platform.h>
+#include <grpcpp/impl/codegen/async_generic_service.h>
+#include <grpcpp/impl/codegen/async_stream.h>
+#include <grpcpp/impl/codegen/async_unary_call.h>
+#include <grpcpp/impl/codegen/client_callback.h>
+#include <grpcpp/impl/codegen/client_context.h>
+#include <grpcpp/impl/codegen/completion_queue.h>
+#include <grpcpp/impl/codegen/message_allocator.h>
+#include <grpcpp/impl/codegen/method_handler.h>
+#include <grpcpp/impl/codegen/proto_utils.h>
+#include <grpcpp/impl/codegen/rpc_method.h>
+#include <grpcpp/impl/codegen/server_callback.h>
+#include <grpcpp/impl/codegen/server_callback_handlers.h>
+#include <grpcpp/impl/codegen/server_context.h>
+#include <grpcpp/impl/codegen/service_type.h>
+#include <grpcpp/impl/codegen/status.h>
+#include <grpcpp/impl/codegen/stub_options.h>
+#include <grpcpp/impl/codegen/sync_stream.h>
 
 namespace dmi {