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

mojo/edk/js/drain_data.h

Index: mojo/edk/js/drain_data.h
diff --git a/third_party/mojo/src/mojo/edk/js/drain_data.h b/mojo/edk/js/drain_data.h
similarity index 98%
copy from third_party/mojo/src/mojo/edk/js/drain_data.h
copy to mojo/edk/js/drain_data.h
index 3c066dcfca3c9a8fdac6e0bd2b229af954c9b332..63c9e4992dd7c182aa5206396f192f2effe29ade 100644
--- a/third_party/mojo/src/mojo/edk/js/drain_data.h
+++ b/mojo/edk/js/drain_data.h
@@ -12,7 +12,7 @@
 #include "v8/include/v8.h"
 
 namespace mojo {
-namespace js {
+namespace edk {
 
 // This class is the implementation of the Mojo JavaScript core module's
 // drainData() method. It is not intended to be used directly. The caller
@@ -58,7 +58,7 @@ class DrainData {
   ScopedVector<DataBuffer> data_buffers_;
 };
 
-}  // namespace js
+}  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_JS_DRAIN_DATA_H_