Stability file flushing: replace experiment by parameter

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 57ff1a1ee4312db5ae15e7d8feb21c71ae0fe877..399e49b9c17d703c6ac7cea12a567d306983f9cd 100644
--- a/components/browser_watcher/features.cc
+++ b/components/browser_watcher/features.cc
@@ -6,12 +6,9 @@
 
 namespace browser_watcher {
 
-// 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};
+
+const char kInitFlushParam[] = "init_flush";
 
 }  // namespace browser_watcher