Add old_state parameter to CustomButton::StateChanged

ui/views/controls/button/menu_button.cc

 // Copyright (c) 2012 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.
 
 #include "ui/views/controls/button/menu_button.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/base/dragdrop/drag_drop_types.h"
 #include "ui/base/resource/resource_bundle.h"
@@ skipping 327 matching lines @@
   if (delta.InMilliseconds() < kMinimumMsBetweenButtonClicks)
     return false;  // Not enough time since the menu closed.
 
   return true;
 }
 
 bool MenuButton::ShouldEnterPushedState(const ui::Event& event) {
   return IsTriggerableEventType(event);
 }
 
-void MenuButton::StateChanged() {
+void MenuButton::StateChanged(ButtonState old_state) {
   if (pressed_lock_count_ != 0) {
     // The button's state was changed while it was supposed to be locked in a
     // pressed state. This shouldn't happen, but conceivably could if a caller
     // tries to switch from enabled to disabled or vice versa while the button
     // is pressed.
     if (state() == STATE_NORMAL)
       should_disable_after_press_ = false;
     else if (state() == STATE_DISABLED)
       should_disable_after_press_ = true;
   } else {
-    LabelButton::StateChanged();
+    LabelButton::StateChanged(old_state);
   }
 }
 
 void MenuButton::NotifyClick(const ui::Event& event) {
   // We don't forward events to the normal button listener, instead using the
   // MenuButtonListener.
   Activate(&event);
 }
 
 void MenuButton::IncrementPressedLocked(bool snap_ink_drop_to_activated) {
@@ skipping 36 matching lines @@
   if (!GetWidget()) {
     NOTREACHED();
     return 0;
   }
 
   gfx::Rect monitor_bounds = GetWidget()->GetWorkAreaBoundsInScreen();
   return monitor_bounds.right() - 1;
 }
 
 }  // namespace views