Flush stability file after initialization

components/browser_watcher/features.cc

Index: components/browser_watcher/features.cc
diff --git a/components/browser_watcher/features.cc b/components/browser_watcher/features.cc
index 87b65aa661ef7f1590b117c40cc862b0b32d0ca0..57ff1a1ee4312db5ae15e7d8feb21c71ae0fe877 100644
--- a/components/browser_watcher/features.cc
+++ b/components/browser_watcher/features.cc
@@ -6,8 +6,12 @@
 
 namespace browser_watcher {
 
-// Additional stability instrumentation.
+// Enables recording persistent stability information, which can later be
+// collected in the event of an unclean shutdown.
 const base::Feature kStabilityDebuggingFeature{
     "StabilityDebugging", base::FEATURE_DISABLED_BY_DEFAULT};
+// Controls the flushing behavior of the persistent stability information.
+const base::Feature kStabilityDebuggingFlushFeature{
+    "StabilityDebuggingFlush", base::FEATURE_DISABLED_BY_DEFAULT};
 
 }  // namespace browser_watcher