Backed out changeset c66a53cd194f (bug 1709838) for Browser-chrome failures in toolkit/components/antitracking/test/browser/browser_PBMCookieBehavior.js. CLOSED TREE

modules/libpref/init/StaticPrefList.yaml

@@ -3047,7 +3047,7 @@
 # is set to true then this pref has no effect)
 - name: dom.security.https_first_pbm
   type: RelaxedAtomicBool
-  value: @IS_NIGHTLY_BUILD@
+  value: false
   mirror: always
 
 - name: dom.security.unexpected_system_load_telemetry_enabled