Mojo: AsyncWaiter and mojo/public/environment

mojo/public/environment/default_async_waiter.h

Index: mojo/public/environment/default_async_waiter.h
diff --git a/mojo/public/environment/default_async_waiter.h b/mojo/public/environment/default_async_waiter.h
new file mode 100644
index 0000000000000000000000000000000000000000..97cef1294c83e0770d578b8ddbc46ac9e8cf7778
--- /dev/null
+++ b/mojo/public/environment/default_async_waiter.h
@@ -0,0 +1,17 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MOJO_PUBLIC_ENVIRONMENT_DEFAULT_ASYNC_WAITER_H_
+#define MOJO_PUBLIC_ENVIRONMENT_DEFAULT_ASYNC_WAITER_H_
+
+#include "mojo/public/system/async_waiter.h"
+
+namespace mojo {
+
+// Returns a default implementation of MojoAsyncWaiter.
+MojoAsyncWaiter* GetDefaultAsyncWaiter();
+
+}  // namespace mojo
+
+#endif  // MOJO_PUBLIC_ENVIRONMENT_DEFAULT_ASYNC_WAITER_H_