Refactor Metrics

chrome/browser/performance_monitor/metric.h

+// Copyright (c) 2012 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 CHROME_BROWSER_PERFORMANCE_MONITOR_METRIC_H_
+#define CHROME_BROWSER_PERFORMANCE_MONITOR_METRIC_H_
+
+#include <string>
+#include "base/time.h"
+
+namespace performance_monitor {
+
+// IMPORTANT: This is used as an indication of the metric type within the
+// performance monitor database; do not change the order! If you add new
+// metric types to this list, place them above METRIC_NUMBER_OF_METRICS and add
+// the appropriate constants to metric_details.
+enum MetricType {
+METRIC_CPU_USAGE,
+METRIC_PRIVATE_MEMORY_USAGE,
+METRIC_SHARED_MEMORY_USAGE,
+METRIC_STARTUP_TIME,
+METRIC_TEST_STARTUP_TIME,
+METRIC_SESSION_RESTORE_TIME,
+METRIC_PAGE_LOAD_TIME,
+METRIC_NUMBER_OF_METRICS
+};
+
+struct Metric {
+ public:
+  Metric();
+  Metric(const base::Time& metric_time, const double metric_value);
+  Metric(const std::string& metric_time, const std::string& metric_value);
+  ~Metric();
+
+  base::Time time;
+  double value;
+};
+
+}  // namespace performance_monitor
+
+#endif  // CHROME_BROWSER_PERFORMANCE_MONITOR_METRIC_H_