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

chrome/test/base/run_all_unittests.cc

 // Copyright (c) 2011 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.
 
 #include "base/bind.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "chrome/test/base/chrome_unit_test_suite.h"
 #include "content/public/test/unittest_test_suite.h"
+
+#if defined(USE_CHROME_EDK)
+#include "mojo/edk/embedder/test_embedder.h"
+#else
 #include "third_party/mojo/src/mojo/edk/embedder/test_embedder.h"
+#endif
 
 int main(int argc, char **argv) {
   content::UnitTestTestSuite test_suite(new ChromeUnitTestSuite(argc, argv));
 
   mojo::embedder::test::InitWithSimplePlatformSupport();
   return base::LaunchUnitTests(
       argc, argv, base::Bind(&content::UnitTestTestSuite::Run,
                              base::Unretained(&test_suite)));
 }