CPM: revised unclean exit watching, revised renderer crash test

chrome/browser/performance_monitor/constants.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_CONSTANTS_H_
 #define CHROME_BROWSER_PERFORMANCE_MONITOR_CONSTANTS_H_
 
 namespace performance_monitor {
 
-// TODO(chebert): i18n on all constants.
+// Constants which are used by the PerformanceMonitor and its related classes.
+// The constants should be documented alongside the definition of their values
+// in the .cc file.
+
 extern const char kMetricNotFoundError[];
-
-// Any metric that is not associated with a specific activity will use this as
-// its activity.
 extern const char kProcessChromeAggregate[];
 
-// Metrics keys for statistics gathering.
+// State tokens
+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 kStateChromeVersion[];
-
 }  // namespace performance_monitor
 
 #endif  // CHROME_BROWSER_PERFORMANCE_MONITOR_CONSTANTS_H_