fix union test deps

mojo/public/cpp/bindings/tests/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.
 
 source_set("tests") {
   testonly = true
 
   sources = [
     "associated_interface_unittest.cc",
     "bind_task_runner_unittest.cc",
@@ skipping 34 matching lines @@
     "//base/test:test_support",
     "//mojo/edk/system",
     "//mojo/public/cpp/bindings",
     "//mojo/public/cpp/system",
     "//mojo/public/cpp/test_support:test_utils",
     "//mojo/public/interfaces/bindings/tests:test_associated_interfaces",
     "//mojo/public/interfaces/bindings/tests:test_export_component",
     "//mojo/public/interfaces/bindings/tests:test_export_component2",
     "//mojo/public/interfaces/bindings/tests:test_exported_import",
     "//mojo/public/interfaces/bindings/tests:test_interfaces",
-    "//mojo/public/interfaces/bindings/tests:test_interfaces_experimental",
     "//mojo/public/interfaces/bindings/tests:test_struct_traits_interfaces",
     "//testing/gtest",
   ]
 
   data = [
     "//mojo/public/interfaces/bindings/tests/data/validation/",
   ]
 
   if (is_ios) {
     assert_no_deps = [ "//third_party/WebKit/*" ]
@@ skipping 72 matching lines @@
 source_set("mojo_public_bindings_test_utils") {
   sources = [
     "validation_test_input_parser.cc",
     "validation_test_input_parser.h",
   ]
 
   deps = [
     "//mojo/public/c/system",
   ]
 }