[bazel] Add fixes for --incompatible_load_{cc,java,proto}_rules_from_bzl

BUILD

@@ -1,5 +1,9 @@
 # Bazel (https://bazel.build/) BUILD file for Protobuf.
 
+load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library", "cc_test", "objc_library")
+load("@rules_java//java:defs.bzl", "java_library")
+load("@rules_proto//proto:defs.bzl", "proto_lang_toolchain", "proto_library")
+
 licenses(["notice"])
 
 exports_files(["LICENSE"])

protobuf_deps.bzl

@@ -5,7 +5,7 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 def protobuf_deps():
     """Loads common dependencies needed to compile the protobuf library."""
 
-    if "zlib" not in native.existing_rules():
+    if not native.existing_rule("zlib"):
         http_archive(
             name = "zlib",
             build_file = "@com_google_protobuf//:third_party/zlib.BUILD",
@@ -14,10 +14,34 @@ def protobuf_deps():
             urls = ["https://zlib.net/zlib-1.2.11.tar.gz"],
         )
 
-    if "six" not in native.existing_rules():
+    if not native.existing_rule("six"):
         http_archive(
             name = "six",
             build_file = "@//:six.BUILD",
             sha256 = "105f8d68616f8248e24bf0e9372ef04d3cc10104f1980f54d57b2ce73a5ad56a",
             urls = ["https://pypi.python.org/packages/source/s/six/six-1.10.0.tar.gz#md5=34eed507548117b2ab523ab14b2f8b55"],
         )
+
+    if not native.existing_rule("rules_cc"):
+        http_archive(
+            name = "rules_cc",
+            sha256 = "29daf0159f0cf552fcff60b49d8bcd4f08f08506d2da6e41b07058ec50cfeaec",
+            strip_prefix = "rules_cc-b7fe9697c0c76ab2fd431a891dbb9a6a32ed7c3e",
+            urls = ["https://github.com/bazelbuild/rules_cc/archive/b7fe9697c0c76ab2fd431a891dbb9a6a32ed7c3e.tar.gz"],
+        )
+
+    if not native.existing_rule("rules_java"):
+        http_archive(
+            name = "rules_java",
+            sha256 = "f5a3e477e579231fca27bf202bb0e8fbe4fc6339d63b38ccb87c2760b533d1c3",
+            strip_prefix = "rules_java-981f06c3d2bd10225e85209904090eb7b5fb26bd",
+            urls = ["https://github.com/bazelbuild/rules_java/archive/981f06c3d2bd10225e85209904090eb7b5fb26bd.tar.gz"],
+        )
+
+    if not native.existing_rule("rules_proto"):
+        http_archive(
+            name = "rules_proto",
+            sha256 = "88b0a90433866b44bb4450d4c30bc5738b8c4f9c9ba14e9661deb123f56a833d",
+            strip_prefix = "rules_proto-b0cc14be5da05168b01db282fe93bdf17aa2b9f4",
+            urls = ["https://github.com/bazelbuild/rules_proto/archive/b0cc14be5da05168b01db282fe93bdf17aa2b9f4.tar.gz"],
+        )