Add data files for base and net. Move GN Python proto outputs.

third_party/pyftpdlib/BUILD.gn

Index: third_party/pyftpdlib/BUILD.gn
diff --git a/third_party/pyftpdlib/BUILD.gn b/third_party/pyftpdlib/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..7301572ea3470a58162603f51cc3a6ca7a091d05
--- /dev/null
+++ b/third_party/pyftpdlib/BUILD.gn
@@ -0,0 +1,12 @@
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# pyftpdlib is a Python program. Depend on this to get the data deps necessary
+# to run it in the test environment.
+group("pyftpdlib") {
+  # For now, depend on the entire directory.
+  data = [
+    "//third_party/pyftpdlib/",
+  ]
+}