Correctly report extension renderer launch counts in system profile.

components/metrics/stability_metrics_helper.cc

Index: components/metrics/stability_metrics_helper.cc
diff --git a/components/metrics/stability_metrics_helper.cc b/components/metrics/stability_metrics_helper.cc
index 8adcb226bd31339aa2be6ff44bf4369ae18e219f..af7f1b4f44a8da3afb6f81f013eb1740eedf34ff 100644
--- a/components/metrics/stability_metrics_helper.cc
+++ b/components/metrics/stability_metrics_helper.cc
@@ -122,10 +122,11 @@ void StabilityMetricsHelper::ProvideStabilityMetrics(
     local_state_->SetInteger(prefs::kStabilityRendererHangCount, 0);
   }
 
-  count = local_state_->GetInteger(prefs::kStabilityRendererLaunchCount);
+  count =
+      local_state_->GetInteger(prefs::kStabilityExtensionRendererLaunchCount);
   if (count) {
-    stability_proto->set_renderer_launch_count(count);
-    local_state_->SetInteger(prefs::kStabilityRendererLaunchCount, 0);
+    stability_proto->set_extension_renderer_launch_count(count);
+    local_state_->SetInteger(prefs::kStabilityExtensionRendererLaunchCount, 0);
   }
 }