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 90%
copy from third_party/mojo/src/mojo/edk/js/drain_data.h
copy to mojo/edk/js/drain_data.h
index 9767f2ddfb074415f6ce6c7a0c9b569c8832000a..63c9e4992dd7c182aa5206396f192f2effe29ade 100644
--- a/third_party/mojo/src/mojo/edk/js/drain_data.h
+++ b/mojo/edk/js/drain_data.h
@@ -2,8 +2,8 @@
 // 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_DRAIN_DATA_H_
-#define THIRD_PARTY_MOJO_SRC_MOJO_EDK_JS_DRAIN_DATA_H_
+#ifndef MOJO_EDK_JS_DRAIN_DATA_H_
+#define MOJO_EDK_JS_DRAIN_DATA_H_
 
 #include "base/memory/scoped_vector.h"
 #include "gin/runner.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  // THIRD_PARTY_MOJO_SRC_MOJO_EDK_JS_DRAIN_DATA_H_
+#endif  // MOJO_EDK_JS_DRAIN_DATA_H_