mojo: add some end-to-end shell tests and a new test sample app

mojo/services/test_service/test_service_impl.cc

 // 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.
 
 #include "mojo/services/test_service/test_service_impl.h"
 
+#include "base/bind.h"
+#include "base/i18n/time_formatting.h"
+#include "base/strings/utf_string_conversions.h"
+#include "mojo/public/cpp/application/application_connection.h"
+#include "mojo/services/test_service/monitoring_uploader.h"
 #include "mojo/services/test_service/test_service_application.h"
+#include "mojo/services/test_service/test_time_service_impl.h"
+#include "url/gurl.h"
 
 namespace mojo {
 namespace test {
 
 TestServiceImpl::TestServiceImpl(ApplicationConnection* connection,
                                  TestServiceApplication* application)
-    : application_(application) {
+    : application_(application), connection_(connection) {
 }
 
 TestServiceImpl::~TestServiceImpl() {
 }
 
 void TestServiceImpl::OnConnectionEstablished() {
   application_->AddRef();
 }
 
 void TestServiceImpl::OnConnectionError() {
   application_->ReleaseRef();
 }
 
 void TestServiceImpl::Ping(const mojo::Callback<void()>& callback) {
+  if (monitoring_)
+    monitoring_->RecordNewRequest();
   callback.Run();
 }
 
+void SendWelcomeMessageWithTime(
+    const mojo::Callback<void(mojo::String)>& requestor_callback,
+    int64_t time_usec) {
+  std::string friendly_msg(TestServiceImpl::kWelcomeMessagePrefix);
+  friendly_msg += UTF16ToUTF8(base::TimeFormatFriendlyDateAndTime(
+      base::Time::FromInternalValue(time_usec)));
+  requestor_callback.Run(friendly_msg);
+}
+
+void TestServiceImpl::GetFriendlyWelcomeMessage(
+    const mojo::String& time_app_url,
+    const mojo::Callback<void(mojo::String)>& callback) {
+  connection_->ConnectToService(time_app_url, &time_service_);
+  if (monitoring_) {
+    monitoring_->RecordNewRequest();
+    time_service_->StartMonitoring(mojo::Callback<void()>());
+  }
+  time_service_->GetPartyTime(base::Bind(
+      &SendWelcomeMessageWithTime,
+      callback));
+}
+
+void TestServiceImpl::StartMonitoring(const mojo::Callback<void()>& callback) {
+  ToyMonitoringServiceStatsRecorderPtr recorder;
+  connection_->ConnectToService("mojo:mojo_test_monitoring_app", &recorder);
+  monitoring_.reset(new MonitoringUploader(recorder.Pass(), Name_, callback));
+}
+
 }  // namespace test
 }  // namespace mojo