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

mojo/edk/js/threading.h

Index: mojo/edk/js/threading.h
diff --git a/third_party/mojo/src/mojo/edk/js/threading.h b/mojo/edk/js/threading.h
similarity index 68%
copy from third_party/mojo/src/mojo/edk/js/threading.h
copy to mojo/edk/js/threading.h
index ef8f7223fda24a44c945882f9191cb910437aed3..1a1803ddc0e58bcffca7718185777e26d027db0d 100644
--- a/third_party/mojo/src/mojo/edk/js/threading.h
+++ b/mojo/edk/js/threading.h
@@ -2,14 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef THIRD_PARTY_MOJO_SRC_MOJO_EDK_JS_THREADING_H_
-#define THIRD_PARTY_MOJO_SRC_MOJO_EDK_JS_THREADING_H_
+#ifndef MOJO_EDK_JS_THREADING_H_
+#define MOJO_EDK_JS_THREADING_H_
 
 #include "gin/public/wrapper_info.h"
 #include "v8/include/v8.h"
 
 namespace mojo {
-namespace js {
+namespace edk {
 
 class Threading {
  public:
@@ -19,7 +19,7 @@ class Threading {
   Threading();
 };
 
-}  // namespace js
+}  // namespace edk
 }  // namespace mojo
 
-#endif  // THIRD_PARTY_MOJO_SRC_MOJO_EDK_JS_THREADING_H_
+#endif  // MOJO_EDK_JS_THREADING_H_