Update the "Execute Javascript" AppleScript error

chrome/browser/ui/cocoa/applescript/error_applescript.mm

Index: chrome/browser/ui/cocoa/applescript/error_applescript.mm
diff --git a/chrome/browser/ui/cocoa/applescript/error_applescript.mm b/chrome/browser/ui/cocoa/applescript/error_applescript.mm
index c261c8bc13100acdb249c43545c95c7033bd168e..3345a40a93b71ce149535820a18dd4b5447d79a7 100644
--- a/chrome/browser/ui/cocoa/applescript/error_applescript.mm
+++ b/chrome/browser/ui/cocoa/applescript/error_applescript.mm
@@ -8,6 +8,11 @@
 #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];
@@ -52,6 +57,8 @@ void AppleScript::SetError(AppleScript::ErrorCode errorCode) {
     case errJavaScriptUnsupported:
       error_string =
           GetNSString(IDS_JAVASCRIPT_UNSUPPORTED_ERROR_APPLESCRIPT_MAC);
+      error_string = [error_string
+          stringByAppendingString:kJavaScriptUnsupportedUrlString];
       break;
     default:
       NOTREACHED();