options: fix content settings exceptions dialog regression.

chrome/browser/ui/webui/options/content_settings_handler.cc

Index: chrome/browser/ui/webui/options/content_settings_handler.cc
diff --git a/chrome/browser/ui/webui/options/content_settings_handler.cc b/chrome/browser/ui/webui/options/content_settings_handler.cc
index b672cbd3d1aee21449be5ef19595da3be1e4d613..f7da58e276225e2baca2ad66c75be9de23317433 100644
--- a/chrome/browser/ui/webui/options/content_settings_handler.cc
+++ b/chrome/browser/ui/webui/options/content_settings_handler.cc
@@ -1209,9 +1209,9 @@ void ContentSettingsHandler::RemoveExceptionFromHostContentSettingsMap(
   rv = args->GetString(2, &pattern);
   DCHECK(rv);
 
-  // The third argument to this handler is optional.
+  // The fourth argument to this handler is optional.
   std::string secondary_pattern;
-  if (args->GetSize() == 3U) {
+  if (args->GetSize() >= 4U) {
     rv = args->GetString(3, &secondary_pattern);
     DCHECK(rv);
   }