Squashed 'third_party/google-benchmark/' content from commit 785e2c3

Change-Id: Iaaca5eca89f717081452e643a233e86425b03e89
git-subtree-dir: third_party/google-benchmark
git-subtree-split: 785e2c3158589e8ef48c59ba80e48d76bdbd8902
diff --git a/cmake/steady_clock.cpp b/cmake/steady_clock.cpp
new file mode 100644
index 0000000..66d50d1
--- /dev/null
+++ b/cmake/steady_clock.cpp
@@ -0,0 +1,7 @@
+#include <chrono>
+
+int main() {
+    typedef std::chrono::steady_clock Clock;
+    Clock::time_point tp = Clock::now();
+    ((void)tp);
+}