Move metrics from namespace to class

Add a new metrics reporter interface to handle the current metrics
report for omaha (with metricsd). This helps to add metrics logging
for android phone devices (using other libraries) in the future.

Also change the unit tests accordingly.

Test: unit tests pass for pico
Change-Id: I703c8b6353e4b38bc89d6a71f01623978cf7a549
diff --git a/mock_metrics.h b/mock_metrics.h
new file mode 100644
index 0000000..e456f61
--- /dev/null
+++ b/mock_metrics.h
@@ -0,0 +1,81 @@
+//
+// Copyright (C) 2017 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef UPDATE_ENGINE_MOCK_METRICS_H
+#define UPDATE_ENGINE_MOCK_METRICS_H
+
+#include <gmock/gmock.h>
+
+#include "update_engine/metrics_reporter_interface.h"
+
+namespace chromeos_update_engine {
+
+class MockMetrics : public MetricsReporterInterface {
+ public:
+  MOCK_METHOD0(Initialize, void());
+
+  MOCK_METHOD1(ReportRollbackMetrics, void(metrics::RollbackResult result));
+
+  MOCK_METHOD1(ReportDailyMetrics, void(base::TimeDelta os_age));
+
+  MOCK_METHOD4(ReportUpdateCheckMetrics,
+               void(SystemState* system_state,
+                    metrics::CheckResult result,
+                    metrics::CheckReaction reaction,
+                    metrics::DownloadErrorCode download_error_code));
+
+  void ReportUpdateAttemptMetrics(
+      SystemState* system_state,
+      int attempt_number,
+      PayloadType payload_type,
+      base::TimeDelta duration,
+      base::TimeDelta duration_uptime,
+      int64_t payload_size,
+      int64_t payload_bytes_downloaded,
+      int64_t payload_download_speed_bps,
+      DownloadSource download_source,
+      metrics::AttemptResult attempt_result,
+      ErrorCode internal_error_code,
+      metrics::DownloadErrorCode payload_download_error_code,
+      metrics::ConnectionType connection_type) override {}
+
+  MOCK_METHOD0(ReportAbnormallyTerminatedUpdateAttemptMetrics, void());
+
+  MOCK_METHOD9(ReportSuccessfulUpdateMetrics,
+               void(int attempt_count,
+                    int updates_abandoned_count,
+                    PayloadType payload_type,
+                    int64_t payload_size,
+                    int64_t num_bytes_downloaded[kNumDownloadSources],
+                    int download_overhead_percentage,
+                    base::TimeDelta total_duration,
+                    int reboot_count,
+                    int url_switch_count));
+
+  MOCK_METHOD2(ReportCertificateCheckMetrics,
+               void(ServerToCheck server_to_check,
+                    CertificateCheckResult result));
+
+  MOCK_METHOD1(ReportFailedUpdateCount, void(int target_attempt));
+
+  MOCK_METHOD1(ReportTimeToReboot, void(int time_to_reboot_minutes));
+
+  MOCK_METHOD2(ReportInstallDateProvisioningSource, void(int source, int max));
+};
+
+}  // namespace chromeos_update_engine
+
+#endif  // UPDATE_ENGINE_MOCK_METRICS_H