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

mojo/edk/system/configuration.cc

Index: mojo/edk/system/configuration.cc
diff --git a/third_party/mojo/src/mojo/edk/system/configuration.cc b/mojo/edk/system/configuration.cc
similarity index 91%
copy from third_party/mojo/src/mojo/edk/system/configuration.cc
copy to mojo/edk/system/configuration.cc
index 4756c99dddb2efa2f1e6f8a65fd90546fd9d76c4..9aaed315f8edf79f1232e3cd7b79a7acbebee3b1 100644
--- a/third_party/mojo/src/mojo/edk/system/configuration.cc
+++ b/mojo/edk/system/configuration.cc
@@ -5,12 +5,12 @@
 #include "mojo/edk/system/configuration.h"
 
 namespace mojo {
-namespace system {
+namespace edk {
 namespace internal {
 
 // These default values should be synced with the documentation in
 // mojo/edk/embedder/configuration.h.
-embedder::Configuration g_configuration = {
+Configuration g_configuration = {
     1000000,              // max_handle_table_size
     1000000,              // max_mapping_table_sze
     1000000,              // max_wait_many_num_handles
@@ -22,5 +22,5 @@ embedder::Configuration g_configuration = {
     1024 * 1024 * 1024};  // max_shared_memory_num_bytes
 
 }  // namespace internal
-}  // namespace system
+}  // namespace edk
 }  // namespace mojo