Add quic_stack_trace.

net/quic/platform/api/quic_stack_trace.h

Index: net/quic/platform/api/quic_stack_trace.h
diff --git a/net/quic/platform/api/quic_stack_trace.h b/net/quic/platform/api/quic_stack_trace.h
new file mode 100644
index 0000000000000000000000000000000000000000..4134e6449ed0adc84a961cf3da09baba51db3b52
--- /dev/null
+++ b/net/quic/platform/api/quic_stack_trace.h
@@ -0,0 +1,18 @@
+// Copyright (c) 2017 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_STACK_TRACE_H_
+#define NET_QUIC_PLATFORM_API_QUIC_STACK_TRACE_H_
+
+#include "net/quic/platform/impl/quic_stack_trace_impl.h"
+
+namespace net {
+
+inline std::string QuicStackTrace() {
+  return QuicStackTraceImpl();
+}
+
+}  // namespace net
+
+#endif  // NET_QUIC_PLATFORM_API_QUIC_STACK_TRACE_H_