Collect Bazel files into bzl_library targets

PiperOrigin-RevId: 325221214
Change-Id: Iab03b900e143b9b95bed151097abb59ac1e0f996

sandboxed_api/bazel/BUILD

@@ -12,6 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+load("@bazel_skylib//:bzl_library.bzl", "bzl_library")
+
 licenses(["notice"])
 
 exports_files([
@@ -19,3 +21,33 @@ exports_files([
     "embed_data.bzl",
     "sapi.bzl",
 ])
+
+bzl_library(
+    name = "build_defs_bzl",
+    srcs = ["build_defs.bzl"],
+    visibility = ["//visibility:private"],
+)
+
+bzl_library(
+    name = "embed_data_bzl",
+    srcs = ["embed_data.bzl"],
+    visibility = ["//visibility:private"],
+)
+
+bzl_library(
+    name = "proto_bzl",
+    srcs = ["proto.bzl"],
+    visibility = ["//visibility:private"],
+)
+
+bzl_library(
+    name = "repositories_bzl",
+    srcs = ["repositories.bzl"],
+    visibility = ["//visibility:private"],
+)
+
+bzl_library(
+    name = "sapi_deps_bzl",
+    srcs = ["sapi_deps.bzl"],
+    visibility = ["//visibility:private"],
+)

sandboxed_api/bazel/embed_data.bzl

@@ -16,8 +16,8 @@
 
 _FILEWRAPPER = "//sandboxed_api/tools/filewrapper"
 
-# TODO(cblichmann): Convert this is to use a "_cc_toolchain" once Bazel #4370
-#                   is fixed.
+# TODO(cblichmann): Convert this to use a "_cc_toolchain" once Bazel #4370 is
+#                   fixed.
 def _sapi_cc_embed_data_impl(ctx):
     cc_file_artifact = None
     h_file_artifact = None

sandboxed_api/bazel/proto.bzl

@@ -56,7 +56,7 @@ def sapi_proto_library(
         deps = [],
         alwayslink = False,
         **kwargs):
-    """Generates proto targets in various languages.
+    """Generates proto library and C++ targets.
 
     Args:
       name: Name for proto_library and base for the cc_proto_library name, name +