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

mojo/edk/js/threading.cc

Index: mojo/edk/js/threading.cc
diff --git a/third_party/mojo/src/mojo/edk/js/threading.cc b/mojo/edk/js/threading.cc
similarity index 96%
copy from third_party/mojo/src/mojo/edk/js/threading.cc
copy to mojo/edk/js/threading.cc
index b571e3e609760f71690d6aa909e0d334264034db..1e6c9a653889af4985897f8549e19a00c653bb08 100644
--- a/third_party/mojo/src/mojo/edk/js/threading.cc
+++ b/mojo/edk/js/threading.cc
@@ -10,7 +10,7 @@
 #include "mojo/edk/js/handle.h"
 
 namespace mojo {
-namespace js {
+namespace edk {
 
 namespace {
 
@@ -43,5 +43,5 @@ v8::Local<v8::Value> Threading::GetModule(v8::Isolate* isolate) {
 Threading::Threading() {
 }
 
-}  // namespace js
+}  // namespace edk
 }  // namespace mojo