Upgrade Google Benchmark library to ToT

llvm-svn: 346984
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 782a15a0d1412d42326016f8a9ce72c7c5d9693c
diff --git a/utils/google-benchmark/WORKSPACE b/utils/google-benchmark/WORKSPACE
new file mode 100644
index 0000000..54734f1
--- /dev/null
+++ b/utils/google-benchmark/WORKSPACE
@@ -0,0 +1,7 @@
+workspace(name = "com_github_google_benchmark")
+
+http_archive(
+     name = "com_google_googletest",
+     urls = ["https://github.com/google/googletest/archive/3f0cf6b62ad1eb50d8736538363d3580dd640c3e.zip"],
+     strip_prefix = "googletest-3f0cf6b62ad1eb50d8736538363d3580dd640c3e",
+)