Add a Mojo EDK for Chrome that uses one OS pipe per message pipe.

mojo/edk/system/configuration.h

Index: mojo/edk/system/configuration.h
diff --git a/mojo/edk/system/configuration.h b/mojo/edk/system/configuration.h
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index 0000000000000000000000000000000000000000..038835ffdd9e8003581c6b17d4afb0772de6bb35
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+++ b/mojo/edk/system/configuration.h
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+// 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_EDK_SYSTEM_CONFIGURATION_H_
+#define MOJO_EDK_SYSTEM_CONFIGURATION_H_
+
+#include "mojo/edk/embedder/configuration.h"
+#include "mojo/edk/system/system_impl_export.h"
+
+namespace mojo {
+namespace edk {
+
+namespace internal {
+MOJO_SYSTEM_IMPL_EXPORT extern Configuration g_configuration;
+}  // namespace internal
+
+MOJO_SYSTEM_IMPL_EXPORT inline const Configuration& GetConfiguration() {
+  return internal::g_configuration;
+}
+
+MOJO_SYSTEM_IMPL_EXPORT inline Configuration* GetMutableConfiguration() {
+  return &internal::g_configuration;
+}
+
+}  // namespace edk
+}  // namespace mojo
+
+#endif  // MOJO_EDK_SYSTEM_CONFIGURATION_H_