Properly using upb's upstream.

.gitmodules

@@ -53,4 +53,4 @@
 	url = https://github.com/envoyproxy/protoc-gen-validate.git
 [submodule "third_party/upb"]
 	path = third_party/upb
-	url = https://github.com/google/upb.git
+	url = https://github.com/protocolbuffers/upb.git

bazel/grpc_deps.bzl

@@ -206,9 +206,9 @@ def grpc_deps():
     if "upb" not in native.existing_rules():
         http_archive(
             name = "upb",
-            sha256 = "67874e217f39e66a3015f51dcdc6831575c25f2260fff9b80482f190278ea586",
-            strip_prefix = "upb-4d8af5e4b998fccc8c9a5d5505866f4722f64954",
-            url = "https://github.com/nicolasnoble/upb/archive/4d8af5e4b998fccc8c9a5d5505866f4722f64954.tar.gz",
+            sha256 = "1107ca1ea9aef3880b60ffb2179d06970394f1d6b62d0565e72b544b4924468d",
+            strip_prefix = "upb-1ee1e362565f681fdd46f16bf9f70f51c905ddd4",
+            url = "https://github.com/protocolbuffers/upb/archive/1ee1e362565f681fdd46f16bf9f70f51c905ddd4.tar.gz",
         )
     if "envoy_api" not in native.existing_rules():
         http_archive(

third_party/upb

@@ -1 +1 @@
-Subproject commit 312c6b421a3c749e4f7c0e2193d4775cb997cff7
+Subproject commit 1ee1e362565f681fdd46f16bf9f70f51c905ddd4

tools/run_tests/sanity/check_submodules.sh

@@ -40,7 +40,7 @@ cat << EOF | awk '{ print $1 }' | sort > "$want_submodules"
  9245d481eb3e890f708ff2d7dadf2a10c04748ba third_party/libcxxabi (heads/release_60)
  09745575a923640154bcf307fba8aedff47f240a third_party/protobuf (v3.7.0-rc.2-247-g09745575)
  e143189bf6f37b3957fb31743df6a1bcf4a8c685 third_party/protoc-gen-validate (v0.0.10)
- ce3ba4dcdcd34d85672d93bd552e8bc871f02b53 third_party/upb (heads/master)
+ 1ee1e362565f681fdd46f16bf9f70f51c905ddd4 third_party/upb (heads/master)
  cacf7f1d4e3d44d871b605da3b647f07d718623f third_party/zlib (v1.2.11)
 EOF