Rename tracer_peer to tracer_util
diff --git a/grpc.gyp b/grpc.gyp
index c9a7507..b813736 100644
--- a/grpc.gyp
+++ b/grpc.gyp
@@ -515,7 +515,7 @@
         'test/core/util/port.cc',
         'test/core/util/port_server_client.cc',
         'test/core/util/slice_splitter.cc',
-        'test/core/util/tracer_peer.cc',
+        'test/core/util/tracer_util.cc',
         'test/core/util/trickle_endpoint.cc',
         'src/core/lib/backoff/backoff.cc',
         'src/core/lib/channel/channel_args.cc',
@@ -724,7 +724,7 @@
         'test/core/util/port.cc',
         'test/core/util/port_server_client.cc',
         'test/core/util/slice_splitter.cc',
-        'test/core/util/tracer_peer.cc',
+        'test/core/util/tracer_util.cc',
         'test/core/util/trickle_endpoint.cc',
         'src/core/lib/backoff/backoff.cc',
         'src/core/lib/channel/channel_args.cc',