From 6ab67c35f15bd0ebf93af8d48d4d0545e9bb9551 Mon Sep 17 00:00:00 2001
From: Jan Kassens <jkassens@meta.com>
Date: Thu, 20 Jun 2024 17:17:25 -0400
Subject: [PATCH] Revert "www: remove dynamic feature flag
 enableSchedulingProfiler" (#29995)

Reverts facebook/react#29994
---
 packages/shared/forks/ReactFeatureFlags.www-dynamic.js | 2 ++
 packages/shared/forks/ReactFeatureFlags.www.js         | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/shared/forks/ReactFeatureFlags.www-dynamic.js b/packages/shared/forks/ReactFeatureFlags.www-dynamic.js
index c698b11b86a25..4ec863c7bbb84 100644
--- a/packages/shared/forks/ReactFeatureFlags.www-dynamic.js
+++ b/packages/shared/forks/ReactFeatureFlags.www-dynamic.js
@@ -40,6 +40,8 @@ export const disableLegacyMode = __VARIANT__;
 // NOTE: This feature will only work in DEV mode; all callsites are wrapped with __DEV__.
 export const enableDebugTracing = __EXPERIMENTAL__;
 
+export const enableSchedulingProfiler = __VARIANT__;
+
 export const enableInfiniteRenderLoopDetection = __VARIANT__;
 
 // TODO: These flags are hard-coded to the default values used in open source.
diff --git a/packages/shared/forks/ReactFeatureFlags.www.js b/packages/shared/forks/ReactFeatureFlags.www.js
index 9dd1299f37661..9404b877f532b 100644
--- a/packages/shared/forks/ReactFeatureFlags.www.js
+++ b/packages/shared/forks/ReactFeatureFlags.www.js
@@ -59,7 +59,9 @@ export const enableAsyncActions = true;
 export const disableInputAttributeSyncing = false;
 export const enableLegacyFBSupport = true;
 
-export const enableSchedulingProfiler = __DEV__;
+// Logs additional User Timing API marks for use with an experimental profiling tool.
+export const enableSchedulingProfiler: boolean =
+  __PROFILE__ && dynamicFeatureFlags.enableSchedulingProfiler;
 
 export const disableLegacyContext = __EXPERIMENTAL__;
 export const enableGetInspectorDataForInstanceInProduction = false;