Add basic support for GetChannel
diff --git a/config.w32 b/config.w32
index db7679c..b4311cb 100644
--- a/config.w32
+++ b/config.w32
@@ -65,6 +65,7 @@
     "src\\core\\lib\\channel\\channel_stack.cc " +
     "src\\core\\lib\\channel\\channel_stack_builder.cc " +
     "src\\core\\lib\\channel\\channel_trace.cc " +
+    "src\\core\\lib\\channel\\channelz.cc " +
     "src\\core\\lib\\channel\\channelz_registry.cc " +
     "src\\core\\lib\\channel\\connected_channel.cc " +
     "src\\core\\lib\\channel\\handshaker.cc " +