Chrome Performance Monitor: Metric API Functions.

chrome/browser/performance_monitor/metric_details.cc

 // 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.
 
 #include "chrome/browser/performance_monitor/metric_details.h"
 
+#include "base/logging.h"
+#include "chrome/browser/performance_monitor/constants.h"
+
 namespace performance_monitor {
+namespace {
+
+// Keep this array synced with MetricTypes in the header file.
+// TODO(mtytel): i18n.
+const char* kMetricTypeNames[] = {
+  kSampleMetricName
+};
+COMPILE_ASSERT(ARRAYSIZE_UNSAFE(kMetricTypeNames) == METRIC_NUMBER_OF_METRICS,
+               metric_names_incorrect_size);
+
+}  // namespace
+
+const char* MetricTypeToString(MetricType metric_type) {
+  DCHECK_GT(METRIC_NUMBER_OF_METRICS, metric_type);
+  return kMetricTypeNames[metric_type];
+}
 
 MetricDetails::MetricDetails() {
 }
 
 MetricDetails::MetricDetails(const std::string& metric_name,
                              const std::string& metric_description)
     : name(metric_name),
       description(metric_description) {
 }
 
 MetricDetails::~MetricDetails() {
 }
 
 }  // namespace performance_monitor