[UI Views] Don't allow a ButtonListener and a MenuButtonListener

chrome/browser/ui/views/menu_test_base.cc

Index: chrome/browser/ui/views/menu_test_base.cc
diff --git a/chrome/browser/ui/views/menu_test_base.cc b/chrome/browser/ui/views/menu_test_base.cc
index 5874c755c1575b8ea91f2f191025dddce6942733..6b211152bbcbd8e6c0befc84b3475b508de085ba 100644
--- a/chrome/browser/ui/views/menu_test_base.cc
+++ b/chrome/browser/ui/views/menu_test_base.cc
@@ -42,8 +42,7 @@ int MenuTestBase::GetMenuRunnerFlags() {
 }
 
 void MenuTestBase::SetUp() {
-  button_ = new views::MenuButton(
-      NULL, base::ASCIIToUTF16("Menu Test"), this, true);
+  button_ = new views::MenuButton(base::ASCIIToUTF16("Menu Test"), this, true);
   menu_ = new views::MenuItemView(this);
   BuildMenu(menu_);
   menu_runner_.reset(new views::MenuRunner(menu_, GetMenuRunnerFlags()));