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

mojo/common/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("//testing/test.gni")
 
 group("common") {
   deps = [
     ":common_base",
     ":url_type_converters",
@@ skipping 59 matching lines @@
 # GYP version: mojo/mojo_base.gyp:mojo_common_unittests
 test("mojo_common_unittests") {
   deps = [
     ":common",
     "//base",
     "//base:message_loop_tests",
     "//base/test:test_support",
     "//mojo/environment:chromium",
     "//mojo/message_pump",
     "//testing/gtest",
-    "//third_party/mojo/src/mojo/edk/test:run_all_unittests",
-    "//third_party/mojo/src/mojo/edk/test:test_support",
     "//third_party/mojo/src/mojo/public/cpp/bindings",
     "//third_party/mojo/src/mojo/public/cpp/test_support:test_utils",
     "//url",
   ]
 
+  if (use_chrome_edk) {
+    deps += [
+      "//mojo/edk/test:run_all_unittests",
+      "//mojo/edk/test:test_support",
+    ]
+  } else {
+    deps += [
+      "//third_party/mojo/src/mojo/edk/test:run_all_unittests",
+      "//third_party/mojo/src/mojo/edk/test:test_support",
+    ]
+  }
+
   sources = [
     # The message_pump tests are so small and some what related to this code
     # that we put them here.
     "../message_pump/handle_watcher_unittest.cc",
     "../message_pump/message_pump_mojo_unittest.cc",
     "common_type_converters_unittest.cc",
   ]
 }
 
 if (!is_component_build) {
   source_set("tracing_impl") {
     sources = [
       "trace_controller_impl.cc",
       "trace_controller_impl.h",
       "tracing_impl.cc",
       "tracing_impl.h",
     ]
 
     deps = [
       "//base",
       "//mojo/application/public/cpp",
       "//mojo/services/tracing/public/interfaces",
       "//third_party/mojo/src/mojo/public/cpp/bindings",
     ]
   }
 }