WidgetDelegateView is its own contents view.

ui/views/color_chooser/color_chooser_view.cc

Index: ui/views/color_chooser/color_chooser_view.cc
diff --git a/ui/views/color_chooser/color_chooser_view.cc b/ui/views/color_chooser/color_chooser_view.cc
index 7fd92737484f33135b491db72a5e4fcabbcfcc67..8913282a7f340087bdc1930643d3f37f1802d958 100644
--- a/ui/views/color_chooser/color_chooser_view.cc
+++ b/ui/views/color_chooser/color_chooser_view.cc
@@ -446,10 +446,6 @@ void ColorChooserView::WindowClosing() {
     listener_->OnColorChooserDialogClosed();
 }
 
-View* ColorChooserView::GetContentsView() {
-  return this;
-}
-
 void ColorChooserView::ContentsChanged(Textfield* sender,
                                        const base::string16& new_contents) {
   SkColor color = SK_ColorBLACK;