WidgetDelegateView is its own contents view.

ash/common/wm/window_cycle_list.cc

 // Copyright 2014 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 "ash/common/wm/window_cycle_list.h"
 
 #include <list>
 #include <map>
 
 #include "ash/common/shell_window_ids.h"
@@ skipping 374 matching lines @@
       // changes other animatable properties.
       highlight_view_->layer()->SetAnimator(
           ui::LayerAnimator::CreateImplicitAnimator());
     }
   }
 
   void OnMouseCaptureLost() override {
     WmShell::Get()->window_cycle_controller()->StopCycling();
   }
 
-  View* GetContentsView() override { return this; }
-
   View* GetInitiallyFocusedView() override {
     return window_view_map_[target_window_];
   }
 
   WmWindow* target_window() { return target_window_; }
 
  private:
   WindowCycleController::Direction initial_direction_;
   std::map<WmWindow*, views::View*> window_view_map_;
   views::View* mirror_container_;
@@ skipping 213 matching lines @@
   widget->Init(params);
 
   screen_observer_.Add(display::Screen::GetScreen());
   widget->Show();
   widget->SetCapture(cycle_view_);
   widget->set_auto_release_capture(false);
   cycle_ui_widget_ = widget;
 }
 
 }  // namespace ash