Upload UMA data using protocol buffers.

chrome/browser/metrics/metrics_log.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.
 
 // 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 47 matching lines @@
       const std::vector<webkit::WebPluginInfo>& plugin_list,
       const base::DictionaryValue* profile_metrics);
 
   // Records the input text, available choices, and selected entry when the
   // user uses the Omnibox to open a URL.
   void RecordOmniboxOpenedURL(const AutocompleteLog& log);
 
   // Record recent delta for critical stability metrics.  We can't wait for a
   // restart to gather these, as that delay biases our observation away from
   // users that run happily for a looooong time.  We send increments with each
-  // uma log upload, just as we send histogram data.
-  void RecordIncrementalStabilityElements();
+  // uma log upload, just as we send histogram data.  Takes the list of
+  // installed plugins as a parameter because that can't be obtained
+  // synchronously from the UI thread.
+  void RecordIncrementalStabilityElements(
+      const std::vector<webkit::WebPluginInfo>& plugin_list);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(MetricsLogTest, ChromeOSStabilityData);
 
   // Writes application stability metrics (as part of the profile log).
   // NOTE: Has the side-effect of clearing those counts.
-  void WriteStabilityElement(PrefService* pref);
+  void WriteStabilityElement(
+      const std::vector<webkit::WebPluginInfo>& plugin_list,
+      PrefService* pref);
 
   // Within stability group, write plugin crash stats.
-  void WritePluginStabilityElements(PrefService* pref);
+  void WritePluginStabilityElements(
+      const std::vector<webkit::WebPluginInfo>& plugin_list,
+      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
   // chromium processes (ones that don't crash, and keep on running).
   void WriteRealtimeStabilityAttributes(PrefService* pref);
 
@@ skipping 11 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 base::DictionaryValue& profile_metrics);
 
   DISALLOW_COPY_AND_ASSIGN(MetricsLog);
 };
 
 #endif  // CHROME_BROWSER_METRICS_METRICS_LOG_H_