Revert "Metadata handling rewrite"
diff --git a/src/cpp/util/slice_cc.cc b/src/cpp/util/slice_cc.cc
index 6efb68e..c05f1cf 100644
--- a/src/cpp/util/slice_cc.cc
+++ b/src/cpp/util/slice_cc.cc
@@ -35,7 +35,7 @@
 
 namespace grpc {
 
-Slice::Slice() : slice_(grpc_empty_slice()) {}
+Slice::Slice() : slice_(gpr_empty_slice()) {}
 
 Slice::~Slice() { grpc_slice_unref(slice_); }