Refactor UKM interface for mojo-ification

components/ukm/test_ukm_service.h

-// Copyright 2017 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 COMPONENTS_UKM_TEST_UKM_SERVICE_H_
-#define COMPONENTS_UKM_TEST_UKM_SERVICE_H_
-
-#include <stddef.h>
-#include <memory>
-
-#include "components/metrics/test_metrics_service_client.h"
-#include "components/prefs/testing_pref_service.h"
-#include "components/ukm/ukm_pref_names.h"
-#include "components/ukm/ukm_service.h"
-
-namespace ukm {
-
-// Wraps an UkmService with additional accessors used for testing.
-class TestUkmService : public UkmService {
- public:
-  explicit TestUkmService(PrefService* pref_service);
-  ~TestUkmService() override;
-
-  size_t sources_count() const { return sources_for_testing().size(); }
-  const std::map<int32_t, std::unique_ptr<UkmSource>>& GetSources() const;
-  const UkmSource* GetSourceForUrl(const char* url) const;
-  const UkmSource* GetSourceForSourceId(int32_t source_id) const;
-
-  size_t entries_count() const { return entries_for_testing().size(); }
-  const UkmEntry* GetEntry(size_t entry_num) const;
-  const UkmEntry* GetEntryForEntryName(const char* entry_name) const;
-
- private:
-  metrics::TestMetricsServiceClient test_metrics_service_client_;
-
-  DISALLOW_COPY_AND_ASSIGN(TestUkmService);
-};
-
-// Convenience harness used for testing; creates a TestUkmService and
-// supplies it with a prefs service with a longer lifespan.
-class UkmServiceTestingHarness {
- public:
-  UkmServiceTestingHarness();
-  virtual ~UkmServiceTestingHarness();
-
-  TestUkmService* test_ukm_service() { return test_ukm_service_.get(); }
-
- private:
-  TestingPrefServiceSimple test_prefs_;
-  std::unique_ptr<TestUkmService> test_ukm_service_;
-
-  DISALLOW_COPY_AND_ASSIGN(UkmServiceTestingHarness);
-};
-
-}  // namespace ukm
-
-#endif  // COMPONENTS_UKM_TEST_UKM_SERVICE_H_