Quantify initial stability report edge cases.

components/metrics/metrics_pref_names.cc

 // Copyright 2014 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.
 
 #include "components/metrics/metrics_pref_names.h"
 
 namespace metrics {
 namespace prefs {
 
 // Set once, to the current epoch time, on the first run of chrome on this
@@ skipping 68 matching lines @@
 // Total number of child process crashes (other than renderer / extension
 // renderer ones, and plugin children, which are counted separately) since the
 // last report.
 const char kStabilityChildProcessCrashCount[] =
     "user_experience_metrics.stability.child_process_crash_count";
 
 // Number of times the application exited uncleanly since the last report.
 const char kStabilityCrashCount[] =
     "user_experience_metrics.stability.crash_count";
 
+// Number of times stability data upload were deferred.
+const char kStabilityDeferredCount[] =
+    "user_experience_metrics.stability.deferred_count";
+
+// Number of times stability data was discarded. This is accumulated since the
+// last report, even across versions.
+const char kStabilityDiscardCount[] =
+    "user_experience_metrics.stability.discard_count";
+
 // Number of times the browser has been run under a debugger.
 const char kStabilityDebuggerPresent[] =
     "user_experience_metrics.stability.debugger_present";
 
 // Number of times the browser has not been run under a debugger.
 const char kStabilityDebuggerNotPresent[] =
     "user_experience_metrics.stability.debugger_not_present";
 
 // An enum value to indicate the execution phase the browser was in.
 const char kStabilityExecutionPhase[] =
@@ skipping 72 matching lines @@
 // Build time, in seconds since an epoch, which is used to assure that stability
 // metrics reported reflect stability of the same build.
 const char kStabilityStatsBuildTime[] =
     "user_experience_metrics.stability.stats_buildtime";
 
 // Version string of previous run, which is used to assure that stability
 // metrics reported under current version reflect stability of the same version.
 const char kStabilityStatsVersion[] =
     "user_experience_metrics.stability.stats_version";
 
+// The number of times the prefs version value did not match the serialized
+// system profile version value.
+const char kStabilityVersionMismatchCount[] =
+    "user_experience_metrics.stability.version_mismatch_count";
+
 // The keys below are strictly increasing counters over the lifetime of
 // a chrome installation. They are (optionally) sent up to the uninstall
 // survey in the event of uninstallation.
 const char kUninstallLaunchCount[] = "uninstall_metrics.launch_count";
 const char kUninstallMetricsPageLoadCount[] =
     "uninstall_metrics.page_load_count";
 const char kUninstallMetricsUptimeSec[] = "uninstall_metrics.uptime_sec";
 
 // Dictionary for measuring cellular data used by UMA service during last 7
 // days.
 const char kUmaCellDataUse[] = "user_experience_metrics.uma_cell_datause";
 
 // Dictionary for measuring cellular data used by user including chrome services
 // per day.
 const char kUserCellDataUse[] = "user_experience_metrics.user_call_datause";
 
 }  // namespace prefs
 }  // namespace metrics