[Draft] try out the idea of adding export macros for C++ bindings.

mojo/edk/js/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("//testing/test.gni")
 
 test("js_unittests") {
   output_name = "mojo_js_unittests"
 
   deps = [
     "//base",
     "//gin:gin_test",
     "//mojo/edk/js",
     "//mojo/edk/test:run_all_unittests",
     "//mojo/edk/test:test_support",
     "//mojo/environment:chromium",
+    "//mojo/public/cpp/bindings/tests:tests_component",
     "//mojo/public/cpp/environment",
     "//mojo/public/cpp/system",
     "//mojo/public/cpp/utility",
-    "//mojo/public/interfaces/bindings/tests:test_interfaces",
     "//mojo/public/interfaces/bindings/tests:test_interfaces_experimental",
   ]
 
   sources = [
     "run_js_tests.cc",
   ]
 }
 
 test("js_integration_tests") {
   output_name = "mojo_js_integration_tests"
 
   deps = [
     "//base",
     "//gin:gin_test",
     "//mojo/edk/js",
     "//mojo/edk/js/tests:js_to_cpp_tests",
     "//mojo/edk/test:run_all_unittests",
     "//mojo/edk/test:test_support",
     "//mojo/environment:chromium",
     "//mojo/public/cpp/bindings",
     "//mojo/public/interfaces/bindings/tests:test_interfaces",
   ]
 
   sources = [
     "run_js_integration_tests.cc",
   ]
 }