Refactor uv/non-uv code in Node extension
diff --git a/binding.gyp b/binding.gyp
index 7dd3254..5455bec 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -859,8 +859,8 @@
         "src/node/ext/call_credentials.cc",
         "src/node/ext/channel.cc",
         "src/node/ext/channel_credentials.cc",
-        "src/node/ext/completion_queue.cc",
-        "src/node/ext/completion_queue_async_worker.cc",
+        "src/node/ext/completion_queue_threadpool.cc",
+        "src/node/ext/completion_queue_uv.cc",
         "src/node/ext/node_grpc.cc",
         "src/node/ext/server.cc",
         "src/node/ext/server_credentials.cc",