Add perf tests for async waits using base::MessageLoop.

mojo/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/nacl/config.gni")
 import("//build/module_args/mojo.gni")
 import("//mojo/public/mojo.gni")
 import("//testing/test.gni")
 
 declare_args() {
@@ skipping 45 matching lines @@
 
 group("tests") {
   testonly = true
   deps = [
     ":public_tests",
     "//mojo/common:mojo_common_apptests",
     "//mojo/converters:mojo_converters_unittests",
     "//mojo/dart:tests",
     "//mojo/data_pipe_utils:mojo_data_pipe_utils_apptests",
     "//mojo/edk:tests",
+
+    # TODO(vtl): Should there be a separate target for perf tests?
+    "//mojo/environment:mojo_environment_perftests",
     "//mojo/file_utils:file_utils_apptests",
     "//mojo/gles2:mgl_unittests",
     "//mojo/message_pump:mojo_message_pump_apptests",
     "//mojo/public/cpp/bindings/tests:versioning_apptests",
     "//mojo/public/platform/native:tests",
     "//mojo/services/files/c:apptests",
     "//mojo/services/files/cpp:files_impl_apptests",
     "//mojo/services/gfx/composition/cpp:apptests",
     "//mojo/services/gfx/images/cpp:image_pipe_apptest",
     "//mojo/services/gfx/images/cpp:image_pipe_apptest",
@@ skipping 110 matching lines @@
     "//mojo/public/cpp/bindings/tests:perftests",
   ]
 }
 
 test("mojo_public_cpp_environment_perftests") {
   deps = [
     "//mojo/edk/test:run_all_perftests",
     "//mojo/public/cpp/environment/tests:perftests",
   ]
 }