Fix appearance of disabled VectorIconButtons.

ui/views/controls/button/vector_icon_button.cc

Index: ui/views/controls/button/vector_icon_button.cc
diff --git a/ui/views/controls/button/vector_icon_button.cc b/ui/views/controls/button/vector_icon_button.cc
index 0fb2248b0472333595f5493296e004c59dd0804d..d40ba0574cd2bfb6aa0af0f61673ca49423c4ad4 100644
--- a/ui/views/controls/button/vector_icon_button.cc
+++ b/ui/views/controls/button/vector_icon_button.cc
@@ -46,10 +46,6 @@ void VectorIconButton::SetIcon(gfx::VectorIconId id) {
   }
 }
 
-void VectorIconButton::OnEnabledChanged() {
-  OnThemeChanged();
-}
-
 void VectorIconButton::OnThemeChanged() {
   SkColor icon_color =
       color_utils::DeriveDefaultIconColor(delegate_->GetVectorIconBaseColor());