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

mojo/edk/js/tests/js_to_cpp_tests.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 define('mojo/edk/js/tests/js_to_cpp_tests', [
   'console',
   'mojo/edk/js/tests/js_to_cpp.mojom',
   'mojo/public/js/bindings',
   'mojo/public/js/connection',
   'mojo/public/js/connector',
@@ skipping 208 matching lines @@
     sampleMessage = new Uint8Array(DATA_PIPE_PARAMS.capacityNumBytes);
     for (i = 0; i < sampleMessage.length; ++i) {
       sampleMessage[i] = 255 - i;
     }
     retainedJsSideStub =
         connection.bindHandleToStub(jsSideRequestHandle, jsToCpp.JsSide);
     retainedJsSide = new JsSideConnection;
     bindings.StubBindings(retainedJsSideStub).delegate = retainedJsSide;
   };
 });