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

content/test/BUILD.gn

 # 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/module_args/v8.gni")
 import("//media/media_options.gni")
@@ skipping 334 matching lines @@
       "//media/base:test_support",
       "//media:shared_memory_support",
       "//mojo/application/public/cpp:cpp_for_chromium",
       "//mojo/environment:chromium",
       "//mojo/test:test_support",
       "//net:test_support",
       "//ppapi/host",
       "//ppapi/proxy",
       "//ppapi/proxy:ipc",
       "//ppapi/shared_impl",
-      "//third_party/mojo/src/mojo/edk/system",
-      "//third_party/mojo/src/mojo/edk/test:test_support",
       "//third_party/mojo/src/mojo/public/cpp/bindings",
       "//third_party/mojo/src/mojo/public/js",
       "//testing/gmock",
       "//testing/gtest",
       "//third_party/WebKit/public:blink",
       "//third_party/leveldatabase",
       "//third_party/mesa:osmesa",
+      "//third_party/mojo/src/mojo/edk/system",
+      "//third_party/mojo/src/mojo/edk/test:test_support",
       "//third_party/zlib",
       "//ui/accessibility",
       "//ui/accessibility:ax_gen",
       "//ui/base",
       "//ui/base/ime",
       "//ui/gfx",
       "//ui/gfx/geometry",
       "//ui/gl",
       "//ui/gl:test_support",
       "//ui/resources",
@@ skipping 416 matching lines @@
       "//testing/gtest",
       "//third_party/WebKit/public:blink",
       "//ui/base",
       "//ui/gfx",
       "//ui/gfx/geometry",
       "//ui/gl",
       "//ui/gl:test_support",
     ]
   }
 }