Add support for collecting non-Chrome crash stats in Chrome OS

chrome/browser/metrics/metrics_log.h

 // Copyright (c) 2010 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.
 
 // This file defines a set of user experience metrics data recorded by
 // the MetricsService.  This is the unit of data that is sent to the server.
 
 #ifndef CHROME_BROWSER_METRICS_METRICS_LOG_H_
 #define CHROME_BROWSER_METRICS_METRICS_LOG_H_
 #pragma once
@@ skipping 46 matching lines @@
   // Get the amount of uptime in seconds since this function was last called.
   // This updates the cumulative uptime metric for uninstall as a side effect.
   static int64 GetIncrementalUptime(PrefService* pref);
 
   // Get the current version of the application as a string.
   static std::string GetVersionString();
 
   virtual MetricsLog* AsMetricsLog();
 
  private:
+  FRIEND_TEST_ALL_PREFIXES(MetricsLogTest, ChromeOSStabilityData);
+
   // Returns the date at which the current metrics client ID was created as
   // a string containing milliseconds since the epoch, or "0" if none was found.
   std::string GetInstallDate() const;
 
 
   // Writes application stability metrics (as part of the profile log).
   // NOTE: Has the side-effect of clearing those counts.
-  void WriteStabilityElement();
+  void WriteStabilityElement(PrefService* pref);
 
   // Within stability group, write plugin crash stats.
   void WritePluginStabilityElements(PrefService* pref);
 
   // Within the stability group, write required attributes.
   void WriteRequiredStabilityAttributes(PrefService* pref);
 
   // Within the stability group, write attributes that need to be updated asap
   // and can't be delayed until the user decides to restart chromium.
   // Delaying these stats would bias metrics away from happy long lived
@@ skipping 13 matching lines @@
 
   // Writes metrics for the profile identified by key. This writes all
   // key/value pairs in profile_metrics.
   void WriteProfileMetrics(const std::string& key,
                            const DictionaryValue& profile_metrics);
 
   DISALLOW_COPY_AND_ASSIGN(MetricsLog);
 };
 
 #endif  // CHROME_BROWSER_METRICS_METRICS_LOG_H_