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/conan/test_package/test_package.cpp b/conan/test_package/test_package.cpp
new file mode 100644
index 0000000..4fa7ec0
--- /dev/null
+++ b/conan/test_package/test_package.cpp
@@ -0,0 +1,18 @@
+#include "benchmark/benchmark.h"
+
+void BM_StringCreation(benchmark::State& state) {
+    while (state.KeepRunning())
+        std::string empty_string;
+}
+
+BENCHMARK(BM_StringCreation);
+
+void BM_StringCopy(benchmark::State& state) {
+    std::string x = "hello";
+    while (state.KeepRunning())
+        std::string copy(x);
+}
+
+BENCHMARK(BM_StringCopy);
+
+BENCHMARK_MAIN();