Instrumentation to debug actions memory leak.

components/metrics/metrics_service_accessor.cc

Index: components/metrics/metrics_service_accessor.cc
diff --git a/components/metrics/metrics_service_accessor.cc b/components/metrics/metrics_service_accessor.cc
index 29b67bd911888a5eedd2d244fbe70aac27899987..19c1fb9ba4148671c5ea9d82ebcf4ae47b3a814e 100644
--- a/components/metrics/metrics_service_accessor.cc
+++ b/components/metrics/metrics_service_accessor.cc
@@ -6,6 +6,7 @@
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
+#include "base/metrics/histogram_macros.h"
 #include "components/metrics/metrics_pref_names.h"
 #include "components/metrics/metrics_service.h"
 #include "components/prefs/pref_service.h"
@@ -17,6 +18,13 @@ namespace metrics {
 bool MetricsServiceAccessor::IsMetricsReportingEnabled(
     PrefService* pref_service) {
 #if defined(GOOGLE_CHROME_BUILD)
+	    UMA_HISTOGRAM_BOOLEAN("UMA.Dbg.IsMetricsReportingEnabled.ChromeBuild", true);
+	    UMA_HISTOGRAM_BOOLEAN("UMA.Dbg.IsMetricsReportingEnabled.PrefValue", pref_service->GetBoolean(prefs::kMetricsReportingEnabled));
+	    UMA_HISTOGRAM_BOOLEAN("UMA.Dbg.IsMetricsReportingEnabled.PrefIsManaged", pref_service->IsManagedPreference(prefs::kMetricsReportingEnabled));
+	    UMA_HISTOGRAM_BOOLEAN("UMA.Dbg.IsMetricsReportingEnabled.PrefIsManagedByCust", pref_service->IsPreferenceManagedByCustodian(prefs::kMetricsReportingEnabled));
+	    UMA_HISTOGRAM_BOOLEAN("UMA.Dbg.IsMetricsReportingEnabled.PrefIsModifiable", pref_service->IsPreferenceManagedByCustodian(prefs::kMetricsReportingEnabled));
+	    UMA_HISTOGRAM_BOOLEAN("UMA.Dbg.IsMetricsReportingEnabled.PrefIsSet", pref_service->HasPrefPath(prefs::kMetricsReportingEnabled));
+
   // In official builds, disable metrics when reporting field trials are
   // forced; otherwise, use the value of the user's preference to determine
   // whether to enable metrics reporting.
@@ -24,6 +32,8 @@ bool MetricsServiceAccessor::IsMetricsReportingEnabled(
              switches::kForceFieldTrials) &&
          pref_service->GetBoolean(prefs::kMetricsReportingEnabled);
 #else
+  UMA_HISTOGRAM_BOOLEAN("UMA.Dbg.IsMetricsReportingEnabled.ChromeBuild", false);
+  
   // In non-official builds, disable metrics reporting completely.
   return false;
 #endif  // defined(GOOGLE_CHROME_BUILD)