Revert "Update protobuf to 3.6.0. Fixes #5439"

This reverts commit a2cac548616e6e6f433df27146c2971f352a4041.

1 files changed, 26 insertions, 0 deletions

diff --git a/third_party/protobuf/3.4.0/util/python/BUILD b/third_party/protobuf/3.4.0/util/python/BUILD
new file mode 100644
index 0000000000..ea9fa641e2
--- /dev/null
+++ b/third_party/protobuf/3.4.0/util/python/BUILD
@@ -0,0 +1,26 @@
+# This is a placeholder for python headers. Projects needing to use
+# fast cpp protos in protobuf's python interface should build with
+# --define=use_fast_cpp_protos=true, and in addition, provide
+# //external:python_headers dependency that in turn provides Python.h.
+#
+# Projects that include protobuf using a Bazel external repository will need to
+# add a workspace rule to their WORKSPACE files to add an external workspace
+# that includes the Python headers. For example, the protobuf WORKSPACE file
+# includes the following local_repository rule that points to this directory:
+#
+# new_local_repository(
+#   name = "python",
+#   path = __workspace_dir__ + "/util/python",
+# )
+licenses(["notice"])
+
+filegroup(
+    name = "srcs",
+    srcs = glob(["**"]),
+    visibility = ["//visibility:public"],
+)
+
+cc_library(
+    name = "python_headers",
+    visibility = ["//visibility:public"],
+)