Fix static initialization in CPM Metric Details

chrome/browser/performance_monitor/constants.h

Index: chrome/browser/performance_monitor/constants.h
diff --git a/chrome/browser/performance_monitor/constants.h b/chrome/browser/performance_monitor/constants.h
index dbf153d22ab5d84782ea64a82025c626e4c1ccf2..7c532812da53ae5317235f67f198cd06aff5e0f6 100644
--- a/chrome/browser/performance_monitor/constants.h
+++ b/chrome/browser/performance_monitor/constants.h
@@ -19,37 +19,6 @@ extern const int kGatherIntervalInMinutes;
 extern const char kStateChromeVersion[];
 extern const char kStateProfilePrefix[];
 
-// Metric details
-extern const char kMetricCPUUsageName[];
-extern const char kMetricCPUUsageDescription[];
-extern const char kMetricCPUUsageUnits[];
-extern const double kMetricCPUUsageTickSize;
-
-extern const char kMetricPrivateMemoryUsageName[];
-extern const char kMetricPrivateMemoryUsageDescription[];
-extern const char kMetricPrivateMemoryUsageUnits[];
-extern const double kMetricPrivateMemoryUsageTickSize;
-
-extern const char kMetricSharedMemoryUsageName[];
-extern const char kMetricSharedMemoryUsageDescription[];
-extern const char kMetricSharedMemoryUsageUnits[];
-extern const double kMetricSharedMemoryUsageTickSize;
-
-extern const char kMetricStartupTimeName[];
-extern const char kMetricStartupTimeDescription[];
-extern const char kMetricStartupTimeUnits[];
-extern const double kMetricStartupTimeTickSize;
-
-extern const char kMetricTestStartupTimeName[];
-extern const char kMetricTestStartupTimeDescription[];
-extern const char kMetricTestStartupTimeUnits[];
-extern const double kMetricTestStartupTimeTickSize;
-
-extern const char kMetricSessionRestoreTimeName[];
-extern const char kMetricSessionRestoreTimeDescription[];
-extern const char kMetricSessionRestoreTimeUnits[];
-extern const double kMetricSessionRestoreTimeTickSize;
-
 }  // namespace performance_monitor
 
 #endif  // CHROME_BROWSER_PERFORMANCE_MONITOR_CONSTANTS_H_