[intl] Stage Locale Info

Spec: https://tc39.es/proposal-intl-locale-info/
Design Doc: https://docs.google.com/document/d/1OwEsvs8VQwvR-ug01xLyIwpgcvUfaP24u9owc7aBKJ4/edit#
https://www.chromestatus.com/feature/5566859262820352

Behind flag --harmony_intl_locale_info

Bug: v8:11638
Change-Id: I9904b777b084aa02c86a258c7df48fdfb976396d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2878908Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74487}

src/flags/flag-definitions.h

@@ -278,10 +278,9 @@ DEFINE_BOOL(harmony_shipping, true, "enable all shipped harmony features")
     "harmony ResizableArrayBuffer / GrowableSharedArrayBuffer")
 
 #ifdef V8_INTL_SUPPORT
-#define HARMONY_INPROGRESS(V)                                             \
-  HARMONY_INPROGRESS_BASE(V)                                              \
-  V(harmony_intl_displaynames_date_types, "Intl.DisplayNames date types") \
-  V(harmony_intl_locale_info, "Intl locale info")
+#define HARMONY_INPROGRESS(V) \
+  HARMONY_INPROGRESS_BASE(V)  \
+  V(harmony_intl_displaynames_date_types, "Intl.DisplayNames date types")
 #else
 #define HARMONY_INPROGRESS(V) HARMONY_INPROGRESS_BASE(V)
 #endif
@@ -292,9 +291,10 @@ DEFINE_BOOL(harmony_shipping, true, "enable all shipped harmony features")
   V(harmony_error_cause, "harmony error cause property")
 
 #ifdef V8_INTL_SUPPORT
-#define HARMONY_STAGED(V) \
-  HARMONY_STAGED_BASE(V)  \
-  V(harmony_intl_best_fit_matcher, "Intl BestFitMatcher")
+#define HARMONY_STAGED(V)                                 \
+  HARMONY_STAGED_BASE(V)                                  \
+  V(harmony_intl_best_fit_matcher, "Intl BestFitMatcher") \
+  V(harmony_intl_locale_info, "Intl locale info")
 #else
 #define HARMONY_STAGED(V) HARMONY_STAGED_BASE(V)
 #endif