Add an end-to-end test that excercises Mojo with a sandbox.

content/shell/utility/shell_content_utility_client.cc

 // Copyright 2015 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.
 
 #include "content/shell/utility/shell_content_utility_client.h"
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/common/mojo/static_loader.h"
+#include "content/public/common/service_registry.h"
 #include "content/public/test/test_mojo_app.h"
+#include "content/shell/utility/mojo_test_impl.h"
 
 namespace content {
 
 namespace {
 
 scoped_ptr<mojo::ShellClient> CreateTestApp() {
   return scoped_ptr<mojo::ShellClient>(new TestMojoApp);
 }
 
 }  // namespace
 
 ShellContentUtilityClient::~ShellContentUtilityClient() {
 }
 
 void ShellContentUtilityClient::RegisterMojoApplications(
     StaticMojoApplicationMap* apps) {
   apps->insert(std::make_pair(kTestMojoAppUrl, base::Bind(&CreateTestApp)));
 }
 
+void ShellContentUtilityClient::RegisterMojoServices(
+    ServiceRegistry* registry) {
+  registry->AddService<mojom::MojoTest>(
+      base::Bind(&MojoTestImpl::CreateMojoTestImpl));
+}
+
 }  // namespace content