[auto] Update onnx to b3b3b28 - Enable checking for functions that don't have a type hint (onnx/onnx#989)

onnxbot · onnxbot · commit f01be11efd60 · 2018-05-21T19:18:19.000Z
onnx/onnx@b3b3b28
diff --git a/third_party/onnx b/third_party/onnx
@@ -1 +1 @@
-Subproject commit 9f9316a5e2d3ffa5e9af339c00348e6dfd52f3e9
+Subproject commit b3b3b2851a8eeb355e4d8654530b7d48361ca4d5
