Delete the stability file on clean exit.

components/metrics/metrics_service.cc

Index: components/metrics/metrics_service.cc
diff --git a/components/metrics/metrics_service.cc b/components/metrics/metrics_service.cc
index b896440857adfc4bfc2e4940519f158a85330a87..5c9448987ab9b42348f2ed6a8b0743936542dacb 100644
--- a/components/metrics/metrics_service.cc
+++ b/components/metrics/metrics_service.cc
@@ -1208,7 +1208,7 @@ void MetricsService::LogCleanShutdown() {
   // Redundant setting to assure that we always reset this value at shutdown
   // (and that we don't use some alternate path, and not call LogCleanShutdown).
   clean_shutdown_status_ = CLEANLY_SHUTDOWN;
-
+  client_->OnLogCleanShutdown();
   clean_exit_beacon_.WriteBeaconValue(true);
   RecordCurrentState(local_state_);
   local_state_->SetInteger(prefs::kStabilityExecutionPhase,