Restoring the descriptor.desc file in the chameleon directory

Change-Id: I16992b3d9459b7c240f88947bc78af3cda855674
diff --git a/protoc_plugins/descriptor.desc b/protoc_plugins/descriptor.desc
new file mode 100644
index 0000000..ac12c36
--- /dev/null
+++ b/protoc_plugins/descriptor.desc
Binary files differ