Stage String#replaceAll

Bug: v8:9801
Change-Id: Id1c6aa94e291b9ea09515a60f248e0b3a0cc99c2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2181163
Auto-Submit: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67552}

src/flags/flag-definitions.h

@@ -221,7 +221,6 @@ DEFINE_IMPLICATION(harmony_weak_refs_with_cleanup_some, harmony_weak_refs)
 // Features that are still work in progress (behind individual flags).
 #define HARMONY_INPROGRESS_BASE(V)                                             \
   V(harmony_promise_any, "harmony Promise.any")                                \
-  V(harmony_string_replaceall, "harmony String.prototype.replaceAll")          \
   V(harmony_regexp_sequence, "RegExp Unicode sequence properties")             \
   V(harmony_weak_refs_with_cleanup_some,                                       \
     "harmony weak references with FinalizationRegistry.prototype.cleanupSome") \
@@ -238,7 +237,8 @@ DEFINE_IMPLICATION(harmony_weak_refs_with_cleanup_some, harmony_weak_refs)
 #endif
 
 // Features that are complete (but still behind --harmony/es-staging flag).
-#define HARMONY_STAGED_BASE(V)
+#define HARMONY_STAGED_BASE(V) \
+  V(harmony_string_replaceall, "harmony String.prototype.replaceAll")
 
 #ifdef V8_INTL_SUPPORT
 #define HARMONY_STAGED(V)                                  \