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/third_party/mojo/src/mojo/edk/system/configuration.h b/mojo/edk/system/configuration.h
similarity index 66%
copy from third_party/mojo/src/mojo/edk/system/configuration.h
copy to mojo/edk/system/configuration.h
index 007277ade94fbdcd3ae6483033fd6adf222a27d3..038835ffdd9e8003581c6b17d4afb0772de6bb35 100644
--- a/third_party/mojo/src/mojo/edk/system/configuration.h
+++ b/mojo/edk/system/configuration.h
@@ -9,23 +9,21 @@
 #include "mojo/edk/system/system_impl_export.h"
 
 namespace mojo {
-namespace system {
+namespace edk {
 
 namespace internal {
-MOJO_SYSTEM_IMPL_EXPORT extern embedder::Configuration g_configuration;
+MOJO_SYSTEM_IMPL_EXPORT extern Configuration g_configuration;
 }  // namespace internal
 
-MOJO_SYSTEM_IMPL_EXPORT inline const embedder::Configuration&
-GetConfiguration() {
+MOJO_SYSTEM_IMPL_EXPORT inline const Configuration& GetConfiguration() {
   return internal::g_configuration;
 }
 
-MOJO_SYSTEM_IMPL_EXPORT inline embedder::Configuration*
-GetMutableConfiguration() {
+MOJO_SYSTEM_IMPL_EXPORT inline Configuration* GetMutableConfiguration() {
   return &internal::g_configuration;
 }
 
-}  // namespace system
+}  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_CONFIGURATION_H_