[flags] Remove --harmony-namespace-exports

It's shipped since M72.

Bug: v8:8101
Change-Id: I80856b9e1acfb6e434f20b6174e864f8c4e2896a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2509945
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70955}

src/flags/flag-definitions.h

@@ -278,8 +278,6 @@ DEFINE_IMPLICATION(harmony_weak_refs_with_cleanup_some, harmony_weak_refs)
 
 // Features that are shipping (turned on by default, but internal flag remains).
 #define HARMONY_SHIPPING_BASE(V)                                          \
-  V(harmony_namespace_exports,                                            \
-    "harmony namespace exports (export * as foo from 'bar')")             \
   V(harmony_sharedarraybuffer, "harmony sharedarraybuffer")               \
   V(harmony_atomics, "harmony atomics")                                   \
   V(harmony_promise_all_settled, "harmony Promise.allSettled")            \

src/init/bootstrapper.cc

@@ -4126,7 +4126,6 @@ void Genesis::InitializeCallSiteBuiltins() {
 #define EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(id) \
   void Genesis::InitializeGlobal_##id() {}
 
-EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_namespace_exports)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_private_methods)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_regexp_sequence)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_top_level_await)

src/parsing/parser.cc

@@ -1465,8 +1465,7 @@ void Parser::ParseExportStar() {
   int pos = position();
   Consume(Token::MUL);
 
-  if (!FLAG_harmony_namespace_exports ||
-      !PeekContextualKeyword(ast_value_factory()->as_string())) {
+  if (!PeekContextualKeyword(ast_value_factory()->as_string())) {
     // 'export' '*' 'from' ModuleSpecifier ';'
     Scanner::Location loc = scanner()->location();
     ExpectContextualKeyword(ast_value_factory()->from_string());
@@ -1478,7 +1477,6 @@ void Parser::ParseExportStar() {
                             specifier_loc, zone());
     return;
   }
-  if (!FLAG_harmony_namespace_exports) return;
 
   // 'export' '*' 'as' IdentifierName 'from' ModuleSpecifier ';'
   //

test/cctest/test-parsing.cc

@@ -7626,7 +7626,6 @@ TEST(NamespaceExportParsing) {
   };
   // clang-format on
 
-  i::FLAG_harmony_namespace_exports = true;
   i::Isolate* isolate = CcTest::i_isolate();
   i::Factory* factory = isolate->factory();
 

test/message/fail/modules-duplicate-export5.mjs

@@ -2,7 +2,5 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --harmony-namespace-exports
-
 export let foo = 42;
 export * as foo from "./doesnt-even-matter.mjs";

test/message/fail/modules-duplicate-export5.out

-*%(basename)s:8: SyntaxError: Duplicate export of 'foo'
+*%(basename)s:6: SyntaxError: Duplicate export of 'foo'
 export * as foo from "./doesnt-even-matter.mjs";
             ^^^
 SyntaxError: Duplicate export of 'foo'

test/test262/testcfg.py

@@ -49,7 +49,6 @@ FEATURE_FLAGS = {
   'Intl.DateTimeFormat-quarter': '--harmony-intl-dateformat-quarter',
   'String.prototype.replaceAll': '--harmony_string_replaceall',
   'Symbol.prototype.description': '--harmony-symbol-description',
-  'export-star-as-namespace-from-module': '--harmony-namespace-exports',
   'Promise.allSettled': '--harmony-promise-all-settled',
   'FinalizationRegistry': '--harmony-weak-refs-with-cleanup-some',
   'WeakRef': '--harmony-weak-refs-with-cleanup-some',