Chrome Performance Monitor: MetricDetails refactor.

chrome/browser/performance_monitor/metric_details.h

Index: chrome/browser/performance_monitor/metric_details.h
diff --git a/chrome/browser/performance_monitor/metric_details.h b/chrome/browser/performance_monitor/metric_details.h
index 6efae2fa14a61947a66daa2cc9002e6763de2cdc..67824160af3c1c887e9516732dd86948b52ac6ad 100644
--- a/chrome/browser/performance_monitor/metric_details.h
+++ b/chrome/browser/performance_monitor/metric_details.h
@@ -9,23 +9,22 @@
 
 namespace performance_monitor {
 
+// Keep this enum synced with kMetricDetailsList in the cc file.
 enum MetricType {
-  METRIC_SAMPLE,
+  METRIC_CPU_USAGE,
+  METRIC_PRIVATE_MEMORY_USAGE,
   METRIC_NUMBER_OF_METRICS
 };
 
-const char* MetricTypeToString(MetricType event_type);
-
 struct MetricDetails {
-  MetricDetails();
-  MetricDetails(const std::string& metric_name,
-                const std::string& metric_description);
-  ~MetricDetails();
-
-  std::string name;
-  std::string description;
+  const char* const name;
+  const char* const description;
+  const char* const units;
+  const double tick_size;
 };
 
+const MetricDetails* GetMetricDetails(MetricType event_type);
+
 }  // namespace performance_monitor
 
 #endif  // CHROME_BROWSER_PERFORMANCE_MONITOR_METRIC_DETAILS_H_