Update the "Execute Javascript" AppleScript error

chrome/browser/ui/cocoa/applescript/error_applescript.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 "chrome/browser/ui/cocoa/applescript/error_applescript.h"
 
 #include "base/logging.h"
 #include "chrome/grit/generated_resources.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 
+namespace {
+NSString* kJavaScriptUnsupportedUrlString =
+    @"\n\nhttps://support.google.com/chrome/?p=applescript";
+}
+
 void AppleScript::SetError(AppleScript::ErrorCode errorCode) {
   using l10n_util::GetNSString;
   NSScriptCommand* current_command = [NSScriptCommand currentCommand];
   [current_command setScriptErrorNumber:(int)errorCode];
   NSString* error_string = @"";
   switch (errorCode) {
     case errGetProfile:
       error_string = GetNSString(IDS_GET_PROFILE_ERROR_APPLESCRIPT_MAC);
       break;
     case errBookmarkModelLoad:
@@ skipping 24 matching lines @@
       break;
     case errSetMode:
       error_string = GetNSString(IDS_SET_MODE_APPLESCRIPT_MAC);
       break;
     case errWrongIndex:
       error_string = GetNSString(IDS_WRONG_INDEX_ERROR_APPLESCRIPT_MAC);
       break;
     case errJavaScriptUnsupported:
       error_string =
           GetNSString(IDS_JAVASCRIPT_UNSUPPORTED_ERROR_APPLESCRIPT_MAC);
+      error_string = [error_string
+          stringByAppendingString:kJavaScriptUnsupportedUrlString];
       break;
     default:
       NOTREACHED();
   }
   [current_command setScriptErrorString:error_string];
 }