Menu item titles include Windows-style accelerator marker....

ui/base/l10n/l10n_util_mac.mm

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import <Foundation/Foundation.h>
 
 #include "base/sys_string_conversions.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "ui/base/l10n/l10n_util.h"
@@ skipping 52 matching lines @@
 
 // Remove the Windows-style accelerator marker and change "..." into an
 // ellipsis.  Returns the result in an autoreleased NSString.
 NSString* FixUpWindowsStyleLabel(const string16& label) {
   const char16 kEllipsisUTF16 = 0x2026;
   string16 ret;
   size_t label_len = label.length();
   ret.reserve(label_len);
   for (size_t i = 0; i < label_len; ++i) {
     char16 c = label[i];
-    if (c == '&') {
+    if (c == '(' && i + 3 < label_len && label[i + 1] == '&'
+        && label[i + 3] == ')') {
+      // Strip '(&?)' patterns which means Windows-style accelerator in some
+      // non-English locales such as Japanese.
+      i += 3;
+    } else if (c == '&') {
       if (i + 1 < label_len && label[i + 1] == '&') {
         ret.push_back(c);
         ++i;
       }
     } else if (c == '.' && i + 2 < label_len && label[i + 1] == '.'
                && label[i + 2] == '.') {
       ret.push_back(kEllipsisUTF16);
       i += 2;
     } else {
       ret.push_back(c);
@@ skipping 74 matching lines @@
                                 const string16& a,
                                 const string16& b,
                                 const string16& c,
                                 const string16& d) {
   return FixUpWindowsStyleLabel(l10n_util::GetStringFUTF16(message_id,
                                                            a, b, c, d));
 }
 
 
 }  // namespace l10n_util