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

mojo/edk/system/awakable.h

Index: mojo/edk/system/awakable.h
diff --git a/third_party/mojo/src/mojo/edk/system/awakable.h b/mojo/edk/system/awakable.h
similarity index 75%
copy from third_party/mojo/src/mojo/edk/system/awakable.h
copy to mojo/edk/system/awakable.h
index ae1376c9dab3656a51ecee9978aa2d39930678e8..2cb10f5835c5a7b8c13d0ab568a90947b555db4d 100644
--- a/third_party/mojo/src/mojo/edk/system/awakable.h
+++ b/mojo/edk/system/awakable.h
@@ -2,16 +2,16 @@
 // 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_SYSTEM_AWAKABLE_H_
-#define THIRD_PARTY_MOJO_SRC_MOJO_EDK_SYSTEM_AWAKABLE_H_
+#ifndef MOJO_EDK_SYSTEM_AWAKABLE_H_
+#define MOJO_EDK_SYSTEM_AWAKABLE_H_
 
 #include <stdint.h>
 
+#include "mojo/edk/system/system_impl_export.h"
 #include "mojo/public/c/system/types.h"
-#include "third_party/mojo/src/mojo/edk/system/system_impl_export.h"
 
 namespace mojo {
-namespace system {
+namespace edk {
 
 // An interface that may be waited on |AwakableList|.
 class MOJO_SYSTEM_IMPL_EXPORT Awakable {
@@ -28,7 +28,7 @@ class MOJO_SYSTEM_IMPL_EXPORT Awakable {
   Awakable() {}
 };
 
-}  // namespace system
+}  // namespace edk
 }  // namespace mojo
 
-#endif  // THIRD_PARTY_MOJO_SRC_MOJO_EDK_SYSTEM_AWAKABLE_H_
+#endif  // MOJO_EDK_SYSTEM_AWAKABLE_H_