[intl] Remove flag for Intl.DisplayNames

Intl.DisplayNames was shipped in m81 and we now can remove the flag.
https://www.chromestatus.com/features/4965112605573120


Bug: v8:8703
Change-Id: Ib65d787c1871aa1da38a22fdb9e369c680c7d2c9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2163820
Commit-Queue: Frank Tang <ftang@chromium.org>
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67382}

src/flags/flag-definitions.h

@@ -259,8 +259,7 @@ DEFINE_IMPLICATION(harmony_weak_refs_with_cleanup_some, harmony_weak_refs)
 #define HARMONY_SHIPPING(V)                           \
   HARMONY_SHIPPING_BASE(V)                            \
   V(harmony_intl_dateformat_fractional_second_digits, \
-    "Add fractionalSecondDigits option to DateTimeFormat") \
-  V(harmony_intl_displaynames, "Intl.DisplayNames")
+    "Add fractionalSecondDigits option to DateTimeFormat")
 #else
 #define HARMONY_SHIPPING(V) HARMONY_SHIPPING_BASE(V)
 #endif

src/init/bootstrapper.cc

@@ -3172,6 +3172,37 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
                           factory->numberingSystem_string(),
                           Builtins::kLocalePrototypeNumberingSystem, true);
     }
+
+    {  // -- D i s p l a y N a m e s
+      Handle<JSFunction> display_names_fun = InstallFunction(
+          isolate(), intl, "DisplayNames", JS_DISPLAY_NAMES_TYPE,
+          JSDisplayNames::kHeaderSize, 0, factory->the_hole_value(),
+          Builtins::kDisplayNamesConstructor);
+      display_names_fun->shared().set_length(0);
+      display_names_fun->shared().DontAdaptArguments();
+      InstallWithIntrinsicDefaultProto(
+          isolate(), display_names_fun,
+          Context::INTL_DISPLAY_NAMES_FUNCTION_INDEX);
+
+      SimpleInstallFunction(isolate(), display_names_fun, "supportedLocalesOf",
+                            Builtins::kDisplayNamesSupportedLocalesOf, 1,
+                            false);
+
+      {
+        // Setup %DisplayNamesPrototype%.
+        Handle<JSObject> prototype(
+            JSObject::cast(display_names_fun->instance_prototype()), isolate());
+
+        InstallToStringTag(isolate(), prototype, "Intl.DisplayNames");
+
+        SimpleInstallFunction(isolate(), prototype, "resolvedOptions",
+                              Builtins::kDisplayNamesPrototypeResolvedOptions,
+                              0, false);
+
+        SimpleInstallFunction(isolate(), prototype, "of",
+                              Builtins::kDisplayNamesPrototypeOf, 1, false);
+      }
+    }
   }
 #endif  // V8_INTL_SUPPORT
 
@@ -4510,43 +4541,6 @@ void Genesis::InitializeGlobal_harmony_intl_segmenter() {
   }
 }
 
-void Genesis::InitializeGlobal_harmony_intl_displaynames() {
-  if (!FLAG_harmony_intl_displaynames) return;
-  Handle<JSObject> intl = Handle<JSObject>::cast(
-      JSReceiver::GetProperty(
-          isolate(),
-          Handle<JSReceiver>(native_context()->global_object(), isolate()),
-          factory()->InternalizeUtf8String("Intl"))
-          .ToHandleChecked());
-
-  Handle<JSFunction> display_names_fun = InstallFunction(
-      isolate(), intl, "DisplayNames", JS_DISPLAY_NAMES_TYPE,
-      JSDisplayNames::kHeaderSize, 0, factory()->the_hole_value(),
-      Builtins::kDisplayNamesConstructor);
-  display_names_fun->shared().set_length(0);
-  display_names_fun->shared().DontAdaptArguments();
-  InstallWithIntrinsicDefaultProto(isolate_, display_names_fun,
-                                   Context::INTL_DISPLAY_NAMES_FUNCTION_INDEX);
-
-  SimpleInstallFunction(isolate(), display_names_fun, "supportedLocalesOf",
-                        Builtins::kDisplayNamesSupportedLocalesOf, 1, false);
-
-  {
-    // Setup %DisplayNamesPrototype%.
-    Handle<JSObject> prototype(
-        JSObject::cast(display_names_fun->instance_prototype()), isolate());
-
-    InstallToStringTag(isolate(), prototype, "Intl.DisplayNames");
-
-    SimpleInstallFunction(isolate(), prototype, "resolvedOptions",
-                          Builtins::kDisplayNamesPrototypeResolvedOptions, 0,
-                          false);
-
-    SimpleInstallFunction(isolate(), prototype, "of",
-                          Builtins::kDisplayNamesPrototypeOf, 1, false);
-  }
-}
-
 #endif  // V8_INTL_SUPPORT
 
 Handle<JSFunction> Genesis::CreateArrayBuffer(

test/intl/displaynames/constructor-order.js

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-displaynames
-
 // Throws only once during construction.
 // Check for all getters to prevent regression.
 // Preserve the order of getter initialization.

test/intl/displaynames/constructor.js

@@ -2,7 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-displaynames
 // DisplayNames constructor can't be called as function.
 assertThrows(() => Intl.DisplayNames('sr'), TypeError);
 

test/intl/displaynames/resolved-options.js

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-displaynames
-
 let displayNames = new Intl.DisplayNames();
 // The default style is 'long'
 assertEquals('long', displayNames.resolvedOptions().style);

test/intl/displaynames/supported-locale.js

@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-intl-displaynames
-
 assertEquals(typeof Intl.DisplayNames.supportedLocalesOf, "function",
              "Intl.DisplayNames.supportedLocalesOf should be a function");
 

test/test262/testcfg.py

@@ -48,7 +48,6 @@ FEATURE_FLAGS = {
   'Intl.DateTimeFormat-dayPeriod': '--harmony-intl-dateformat-day-period',
   'Intl.DateTimeFormat-quarter': '--harmony-intl-dateformat-quarter',
   'Intl.DateTimeFormat-fractionalSecondDigits': '--harmony-intl-dateformat-fractional-second-digits',
-  'Intl.DisplayNames': '--harmony-intl-displaynames',
   'String.prototype.replaceAll': '--harmony_string_replaceall',
   'Symbol.prototype.description': '--harmony-symbol-description',
   'export-star-as-namespace-from-module': '--harmony-namespace-exports',