Upgrade protobuf to 3.9.2

PiperOrigin-RevId: 301935849
Change-Id: I63be177fc6601e4c68498e06bcba15fee8c445f1

tensorflow/tools/pip_package/setup.py

@@ -60,7 +60,7 @@ REQUIRED_PACKAGES = [
     'keras_preprocessing >= 1.1.0',
     'numpy >= 1.16.0, < 2.0',
     'opt_einsum >= 2.3.2',
-    'protobuf >= 3.8.0',
+    'protobuf >= 3.9.2',
     'tensorboard >= 2.1.0, < 2.2.0',
     'tensorflow_estimator >= 2.1.0, < 2.2.0',
     'termcolor >= 1.1.0',

tensorflow/workspace.bzl

@@ -471,26 +471,19 @@ def tf_repositories(path_prefix = "", tf_repo_name = ""):
         },
     )
 
-    # 310ba5ee72661c081129eb878c1bbcec936b20f0 is based on 3.8.0 with a fix for protobuf.bzl.
-    PROTOBUF_URLS = [
-        "https://storage.googleapis.com/mirror.tensorflow.org/github.com/protocolbuffers/protobuf/archive/310ba5ee72661c081129eb878c1bbcec936b20f0.tar.gz",
-        "https://github.com/protocolbuffers/protobuf/archive/310ba5ee72661c081129eb878c1bbcec936b20f0.tar.gz",
-    ]
-    PROTOBUF_SHA256 = "b9e92f9af8819bbbc514e2902aec860415b70209f31dfc8c4fa72515a5df9d59"
-    PROTOBUF_STRIP_PREFIX = "protobuf-310ba5ee72661c081129eb878c1bbcec936b20f0"
-
-    PROTOBUF_PATCH = "//third_party/protobuf:protobuf.patch"
-
     tf_http_archive(
         name = "com_google_protobuf",
-        patch_file = clean_dep(PROTOBUF_PATCH),
+        patch_file = clean_dep("//third_party/protobuf:protobuf.patch"),
-        sha256 = PROTOBUF_SHA256,
+        sha256 = "cfcba2df10feec52a84208693937c17a4b5df7775e1635c1e3baffc487b24c9b",
-        strip_prefix = PROTOBUF_STRIP_PREFIX,
+        strip_prefix = "protobuf-3.9.2",
         system_build_file = clean_dep("//third_party/systemlibs:protobuf.BUILD"),
         system_link_files = {
             "//third_party/systemlibs:protobuf.bzl": "protobuf.bzl",
         },
-        urls = PROTOBUF_URLS,
+        urls = [
+            "https://storage.googleapis.com/mirror.tensorflow.org/github.com/protocolbuffers/protobuf/archive/v3.9.2.zip",
+            "https://github.com/protocolbuffers/protobuf/archive/v3.9.2.zip",
+        ],
     )
 
     tf_http_archive(

third_party/protobuf/protobuf.patch

@@ -1,17 +1,25 @@
 diff --git a/BUILD b/BUILD
-index 2fb26050..c2744d5b 100644
+index dbae719ff..87dc38470 100644
 --- a/BUILD
 +++ b/BUILD
-@@ -19,7 +19,7 @@ config_setting(
+@@ -23,7 +23,7 @@ config_setting(
  # ZLIB configuration
  ################################################################################
- 
+
 -ZLIB_DEPS = ["@zlib//:zlib"]
 +ZLIB_DEPS = ["@zlib"]
- 
+
  ################################################################################
  # Protobuf Runtime Library
-@@ -209,6 +209,7 @@ cc_library(
+@@ -143,6 +143,7 @@ cc_library(
+     copts = COPTS,
+     includes = ["src/"],
+     linkopts = LINK_OPTS,
++    alwayslink = 1,
+     visibility = ["//visibility:public"],
+ )
+
+@@ -213,6 +214,7 @@ cc_library(
      copts = COPTS,
      includes = ["src/"],
      linkopts = LINK_OPTS,
@@ -19,26 +27,17 @@ index 2fb26050..c2744d5b 100644
      visibility = ["//visibility:public"],
      deps = [":protobuf_lite"] + PROTOBUF_DEPS,
  )
-@@ -219,7 +220,7 @@ cc_library(
- # TODO(keveman): Remove this target once the support gets added to Bazel.
- cc_library(
-     name = "protobuf_headers",
--    hdrs = glob(["src/**/*.h"]),
-+    hdrs = glob(["src/**/*.h", "src/**/*.inc"]),
-     includes = ["src/"],
-     visibility = ["//visibility:public"],
- )
- 
 diff --git a/protobuf.bzl b/protobuf.bzl
-index e0653321f..4ac23594b 100644
+index e0653321f..253d9cbb5 100644
 --- a/protobuf.bzl
 +++ b/protobuf.bzl
-@@ -85,6 +85,8 @@ def _proto_gen_impl(ctx):
+@@ -84,7 +84,9 @@ def _proto_gen_impl(ctx):
+
      for dep in ctx.attr.deps:
          import_flags += dep.proto.import_flags
          deps += dep.proto.deps
 +    import_flags = depset(import_flags).to_list()
 +    deps = depset(deps).to_list()
- 
+
      if not ctx.attr.gen_cc and not ctx.attr.gen_py and not ctx.executable.plugin:
-         return struct(
+         return struct(