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

ui/views/controls/button/menu_button.cc

Index: ui/views/controls/button/menu_button.cc
diff --git a/ui/views/controls/button/menu_button.cc b/ui/views/controls/button/menu_button.cc
index c7a53389a142840e66c7e50d712db0d25fb0ee2d..2764c7769598e7432b97d20f377c1925ae4345cc 100644
--- a/ui/views/controls/button/menu_button.cc
+++ b/ui/views/controls/button/menu_button.cc
@@ -62,16 +62,16 @@ MenuButton::PressedLock::~PressedLock() {
 //
 ////////////////////////////////////////////////////////////////////////////////
 
-MenuButton::MenuButton(ButtonListener* listener,
-                       const base::string16& text,
+MenuButton::MenuButton(const base::string16& text,
                        MenuButtonListener* menu_button_listener,
                        bool show_menu_marker)
-    : LabelButton(listener, text),
+    : LabelButton(nullptr, text),
       menu_offset_(kDefaultMenuOffsetX, kDefaultMenuOffsetY),
       listener_(menu_button_listener),
       show_menu_marker_(show_menu_marker),
-      menu_marker_(ui::ResourceBundle::GetSharedInstance().GetImageNamed(
-          IDR_MENU_DROPARROW).ToImageSkia()),
+      menu_marker_(ui::ResourceBundle::GetSharedInstance()
+                       .GetImageNamed(IDR_MENU_DROPARROW)
+                       .ToImageSkia()),
       destroyed_flag_(NULL),
       pressed_lock_count_(0),
       should_disable_after_press_(false),