[bazel] Add fixes for --incompatible_load_cc_rules_from_bzl (#351)

* [bazel] Add fixes for --incompatible_load_cc_rules_from_bzl

Starting with Bazel 1.0 (September 2019), C++ rules will need to be
loaded from the @rules_cc repository. This change adds the required
loads for that. For full compatibility, we will need versions of
googletest and google-benchmark that also includes these loads.

* Run buildifier again after merge

absl/time/BUILD.bazel

@@ -14,6 +14,7 @@
 # limitations under the License.
 #
 
+load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test")
 load(
     "//absl:copts/configure_copts.bzl",
     "ABSL_DEFAULT_COPTS",

absl/time/internal/cctz/BUILD.bazel

@@ -12,6 +12,8 @@
 #   See the License for the specific language governing permissions and
 #   limitations under the License.
 
+load("@rules_cc//cc:defs.bzl", "cc_library", "cc_test")
+
 package(features = ["-parse_headers"])
 
 licenses(["notice"])  # Apache License
@@ -77,10 +79,10 @@ cc_library(
         "include/cctz/zone_info_source.h",
     ],
     linkopts = select({
-        ":osx": [
+        ":ios": [
             "-framework Foundation",
         ],
-        ":ios": [
+        ":osx": [
             "-framework Foundation",
         ],
         "//conditions:default": [],