Add a new QUIC platform API quic_aligned.h for the alignment macro definitions.

net/quic/platform/api/quic_aligned.h

Index: net/quic/platform/api/quic_aligned.h
diff --git a/net/quic/platform/api/quic_aligned.h b/net/quic/platform/api/quic_aligned.h
new file mode 100644
index 0000000000000000000000000000000000000000..7e5d9357a67a3a4b9050d08acb51679896fa983f
--- /dev/null
+++ b/net/quic/platform/api/quic_aligned.h
@@ -0,0 +1,14 @@
+// Copyright 2016 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 NET_QUIC_PLATFORM_API_QUIC_ALIGNED_H_
+#define NET_QUIC_PLATFORM_API_QUIC_ALIGNED_H_
+
+#include "net/quic/platform/impl/quic_aligned_impl.h"
+
+#define QUIC_ALIGN_OF QUIC_ALIGN_OF_IMPL
+#define QUIC_ALIGNED(X) QUIC_ALIGNED_IMPL(X)
+#define QUIC_CACHELINE_ALIGNED QUIC_CACHELINE_ALIGNED_IMPL
+
+#endif  // NET_QUIC_PLATFORM_API_QUIC_ALIGNED_H_