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

mojo/services/test_service/test_request_tracker_impl.h

+// 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.
+
+#ifndef MOJO_SERVICES_TEST_SERVICE_TEST_REQUEST_TRACKER_IMPL_H_
+#define MOJO_SERVICES_TEST_SERVICE_TEST_REQUEST_TRACKER_IMPL_H_
+
+#include "base/memory/weak_ptr.h"
+#include "mojo/public/cpp/system/macros.h"
+#include "mojo/services/test_service/test_request_tracker.mojom.h"
+
+namespace mojo {
+class ApplicationConnection;
+namespace test {
+
+typedef std::map<uint64_t, std::vector<ServiceStats> > AllRecordsMap;
+
+// Shared state between all instances of TestRequestTrackerImpl
+// and the master TrackedRequestService.
+struct TrackingContext {
+  TrackingContext();
+  ~TrackingContext();
+  AllRecordsMap records;
+  std::map<uint64_t, std::string> ids_to_names;
+  uint64_t next_id;
+};
+
+class TestRequestTrackerImpl : public InterfaceImpl<TestRequestTracker> {
+ public:
+  TestRequestTrackerImpl(ApplicationConnection* connection,
+                         TrackingContext* context);
+  virtual ~TestRequestTrackerImpl();
+
+  // TestRequestTracker.
+  virtual void RecordStats(uint64_t client_id,
+                           ServiceStatsPtr stats) MOJO_OVERRIDE;
+
+  // InterfaceImpl override.
+  virtual void OnConnectionEstablished() MOJO_OVERRIDE;
+
+ private:
+  void UploaderNameCallback(uint64_t id, const mojo::String& name);
+  TrackingContext* context_;
+  base::WeakPtrFactory<TestRequestTrackerImpl> weak_factory_;
+  MOJO_DISALLOW_COPY_AND_ASSIGN(TestRequestTrackerImpl);
+};
+
+class TestTrackedRequestServiceImpl
+    : public InterfaceImpl<TestTrackedRequestService> {
+ public:
+  TestTrackedRequestServiceImpl(
+      ApplicationConnection* connection,
+      TrackingContext* context);
+  virtual ~TestTrackedRequestServiceImpl();
+
+  // |TestTrackedRequestService| implementation.
+  virtual void GetReport(
+      const mojo::Callback<void(mojo::Array<ServiceReportPtr>)>& callback)
+          MOJO_OVERRIDE;
+
+ private:
+  TrackingContext* context_;
+  MOJO_DISALLOW_COPY_AND_ASSIGN(TestTrackedRequestServiceImpl);
+};
+
+}  // namespace test
+}  // namespace mojo
+
+#endif  // MOJO_SERVICES_TEST_SERVICE_TEST_REQUEST_TRACKER_IMPL_H_