Make memory_order_acquire visible in global namespace
We were missing that using directive when including <atomic>.
Bug:17736764
Change-Id: Ie8ca92a952749415567bcd5fa21d56629a364660
diff --git a/libc/include/stdatomic.h b/libc/include/stdatomic.h
index 3db25a7..bcea859 100644
--- a/libc/include/stdatomic.h
+++ b/libc/include/stdatomic.h
@@ -89,6 +89,7 @@
using std::memory_order;
using std::memory_order_relaxed;
using std::memory_order_consume;
+using std::memory_order_acquire;
using std::memory_order_release;
using std::memory_order_acq_rel;
using std::memory_order_seq_cst;