Mojo JS Bindings: restore the ServiceProvider class, add an application test

services/js/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("//mojo/public/mojo_application.gni")
 
 group("js") {
   deps = [
     ":js_content_handler",
   ]
 }
 
 mojo_native_application("js_content_handler") {
   sources = [
     "content_handler_main.cc",
     "js_app.cc",
     "js_app.h",
     "js_app_message_loop_observers.cc",
     "js_app_message_loop_observers.h",
     "js_app_runner_delegate.cc",
     "js_app_runner_delegate.h",
     "js_app_shell.cc",
     "js_app_shell.h",
-    "mojo_bridge_module.cc",
-    "mojo_bridge_module.h",
+    "js_app_bridge_module.cc",
+    "js_app_bridge_module.h",
   ]
 
   deps = [
     "//base:i18n",
     "//mojo/application",
     "//mojo/application:application",
     "//mojo/application:content_handler",
     "//mojo/common",
     "//mojo/edk/js/",
     "//mojo/environment:chromium",
@@ skipping 12 matching lines @@
     "//gin:gin_test",
     "//mojo/edk/js",
     "//mojo/edk/test:run_all_unittests",
     "//mojo/edk/test:test_support",
     "//mojo/public/cpp/utility",
     "//mojo/environment:chromium",
     "//mojo/public/interfaces/bindings/tests:test_interfaces",
     "//services/js/modules/clock/test",
   ]
 }
+
+mojo_native_application("js_apptests") {
+  testonly = true
+
+  sources = [
+    "js_apptests.cc",
+  ]
+
+  deps = [
+    "//base",
+    "//mojo/public/c/system:for_shared_library",
+    "//mojo/application",
+    "//mojo/application:test_support",
+    "//mojo/public/cpp/bindings",
+    "//mojo/public/cpp/system",
+    "//services/js/test:echo_service",
+  ]
+}
+