Revert of Create and integrate a metrics service client into Blimp engine.

blimp/engine/app/blimp_metrics_service_client_unittest.cc

-// Copyright 2016 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 "blimp/engine/app/blimp_metrics_service_client.h"
-
-#include <list>
-#include <string>
-
-#include "base/memory/ref_counted.h"
-#include "base/message_loop/message_loop.h"
-#include "base/run_loop.h"
-#include "base/test/test_simple_task_runner.h"
-#include "base/thread_task_runner_handle.h"
-#include "components/metrics/metrics_service.h"
-#include "components/pref_registry/pref_registry_syncable.h"
-#include "components/prefs/in_memory_pref_store.h"
-#include "components/prefs/pref_service.h"
-#include "components/prefs/pref_service_factory.h"
-#include "net/url_request/url_request_context_getter.h"
-#include "net/url_request/url_request_test_util.h"
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace blimp {
-namespace engine {
-// Shows notifications which correspond to PersistentPrefStore's reading errors.
-void HandleReadError(PersistentPrefStore::PrefReadError error) {
-}
-
-class BlimpMetricsServiceClientTest : public testing::Test {
- protected:
-  void SetUp() override;
-  void TearDown() override;
-
-  void SetUpPrefRegistry();
-  void SetUpPrefService();
-  void SetUpRequestContextGetter();
-
-  base::MessageLoop message_loop_;
-  scoped_refptr<user_prefs::PrefRegistrySyncable> pref_registry_;
-  std::unique_ptr<PrefService> pref_service_;
-  scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
-};
-
-void BlimpMetricsServiceClientTest::SetUp() {
-  // Set up all deps and then InitializeBlimpMetrics.
-  SetUpPrefRegistry();
-  SetUpPrefService();
-  SetUpRequestContextGetter();
-  base::SetRecordActionTaskRunner(message_loop_.task_runner());
-  InitializeBlimpMetrics(std::move(pref_service_), request_context_getter_);
-  base::RunLoop().RunUntilIdle();
-
-  // Checks of InitializeBlimpMetrics.
-  // TODO(jessicag): Check request_context_getter_ set.
-  // PrefService unique pointer moved to BlimpMetricsServiceClient.
-  EXPECT_EQ(nullptr, pref_service_.get());
-
-  // TODO(jessicag): Confirm registration of metrics providers.
-  // TODO(jessicag): MetricsService initializes recording state.
-  // TODO(jessicag): Confirm MetricsService::Start() is called.
-}
-
-void BlimpMetricsServiceClientTest::TearDown() {
-  FinalizeBlimpMetrics();
-  base::RunLoop().RunUntilIdle();
-  // TODO(jessicag): Ensure MetricsService::Stop() is called.
-}
-
-void BlimpMetricsServiceClientTest::SetUpPrefRegistry() {
-  pref_registry_ = new user_prefs::PrefRegistrySyncable();
-  metrics::MetricsService::RegisterPrefs(pref_registry_.get());
-}
-
-void BlimpMetricsServiceClientTest::SetUpPrefService() {
-  PrefServiceFactory pref_service_factory;
-  pref_service_factory.set_user_prefs(new InMemoryPrefStore());
-  pref_service_factory.set_read_error_callback(base::Bind(&HandleReadError));
-  pref_service_ = pref_service_factory.Create(pref_registry_.get());
-  ASSERT_NE(nullptr, pref_service_.get());
-}
-
-void BlimpMetricsServiceClientTest::SetUpRequestContextGetter() {
-  request_context_getter_ =
-      new net::TestURLRequestContextGetter(base::ThreadTaskRunnerHandle::Get());
-}
-
-TEST_F(BlimpMetricsServiceClientTest, InitializeFinalize) {
-  // SetUp and TearDown handle initialization and finalization checks.
-}
-
-}  // namespace engine
-}  // namespace blimp