Add bzl_libraries to protobuf

PiperOrigin-RevId: 623784182

bazel/BUILD

@@ -1,26 +0,0 @@
-# Copyright (c) 2009-2021, Google LLC
-# All rights reserved.
-#
-# Use of this source code is governed by a BSD-style
-# license that can be found in the LICENSE file or at
-# https://developers.google.com/open-source/licenses/bsd
-
-load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
-
-# begin:google_only
-# package(default_applicable_licenses = ["//upb:license"])
-# end:google_only
-
-licenses(["notice"])
-
-bzl_library(
-    name = "upb_proto_library_bzl",
-    srcs = [
-        "upb_c_proto_library.bzl",
-        "upb_minitable_proto_library.bzl",
-        "upb_proto_library.bzl",
-        "upb_proto_reflection_library.bzl",
-    ],
-    visibility = ["//visibility:public"],
-    deps = ["//bazel/private:upb_proto_library_internal_bzl"],
-)

bazel/BUILD.bazel

@@ -0,0 +1,57 @@
+# Copyright (c) 2009-2021, Google LLC
+# All rights reserved.
+#
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://developers.google.com/open-source/licenses/bsd
+
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+
+licenses(["notice"])
+
+bzl_library(
+    name = "proto_library_bzl",
+    srcs = ["proto_library.bzl"],
+    visibility = ["//visibility:public"],
+)
+
+bzl_library(
+    name = "cc_proto_library_bzl",
+    srcs = ["cc_proto_library.bzl"],
+    visibility = ["//visibility:public"],
+)
+
+bzl_library(
+    name = "java_proto_library_bzl",
+    srcs = ["java_proto_library.bzl"],
+    visibility = ["//visibility:public"],
+)
+
+bzl_library(
+    name = "java_lite_proto_library_bzl",
+    srcs = ["java_lite_proto_library.bzl"],
+    visibility = ["//visibility:public"],
+)
+
+bzl_library(
+    name = "py_proto_library_bzl",
+    srcs = ["py_proto_library.bzl"],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//bazel/common:proto_common_bzl",
+        "//bazel/common:proto_info_bzl",
+        "@rules_python//python:py_info_bzl",
+    ],
+)
+
+bzl_library(
+    name = "upb_proto_library_bzl",
+    srcs = [
+        "upb_c_proto_library.bzl",
+        "upb_minitable_proto_library.bzl",
+        "upb_proto_library.bzl",
+        "upb_proto_reflection_library.bzl",
+    ],
+    visibility = ["//visibility:public"],
+    deps = ["//bazel/private:upb_proto_library_internal_bzl"],
+)

bazel/common/BUILD.bazel

@@ -10,3 +10,25 @@ bzl_library(
         "//bazel/private:native_bzl",
     ],
 )
+
+bzl_library(
+    name = "proto_info_bzl",
+    srcs = [
+        "proto_info.bzl",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//bazel/private:native_bzl",
+    ],
+)
+
+bzl_library(
+    name = "proto_lang_toolchain_info_bzl",
+    srcs = [
+        "proto_lang_toolchain_info.bzl",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [
+        ":proto_common.bzl",
+    ],
+)

bazel/private/BUILD.bazel

@@ -32,3 +32,11 @@ bzl_library(
     ],
     visibility = ["//bazel:__subpackages__"],
 )
+
+bzl_library(
+    name = "proto_toolchain_rule_bzl",
+    srcs = [
+        "proto_toolchain_rule.bzl",
+    ],
+    visibility = ["//bazel:__subpackages__"],
+)

bazel/toolchains/BUILD.bazel

@@ -0,0 +1,23 @@
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+
+bzl_library(
+    name = "proto_toolchain_bzl",
+    srcs = [
+        "proto_toolchain.bzl",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//bazel/private:proto_toolchain_rule_bzl",
+    ],
+)
+
+bzl_library(
+    name = "proto_lang_toolchain_bzl",
+    srcs = [
+        "proto_lang_toolchain.bzl",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//bazel/common:proto_common_bzl",
+    ],
+)