Add old_state parameter to CustomButton::StateChanged

ui/views/controls/button/md_text_button.cc

Index: ui/views/controls/button/md_text_button.cc
diff --git a/ui/views/controls/button/md_text_button.cc b/ui/views/controls/button/md_text_button.cc
index 842b6befa769303996c8c0b7e77dd02b124604f6..46272dc61be0263e3c34d7438d1e3acfa100473e 100644
--- a/ui/views/controls/button/md_text_button.cc
+++ b/ui/views/controls/button/md_text_button.cc
@@ -135,8 +135,8 @@ std::unique_ptr<views::InkDropRipple> MdTextButton::CreateInkDropRipple()
           ink_drop_visible_opacity()));
 }
 
-void MdTextButton::StateChanged() {
-  LabelButton::StateChanged();
+void MdTextButton::StateChanged(ButtonState old_state) {
+  LabelButton::StateChanged(old_state);
   UpdateColors();
 }