WidgetDelegateView is its own contents view.

ash/root_window_controller_unittest.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 "ash/root_window_controller.h"
 
 #include <memory>
 
 #include "ash/aura/wm_window_aura.h"
 #include "ash/common/material_design/material_design_controller.h"
@@ skipping 42 matching lines @@
 
 namespace ash {
 namespace {
 
 class TestDelegate : public views::WidgetDelegateView {
  public:
   explicit TestDelegate(bool system_modal) : system_modal_(system_modal) {}
   ~TestDelegate() override {}
 
   // Overridden from views::WidgetDelegate:
-  views::View* GetContentsView() override { return this; }
-
   ui::ModalType GetModalType() const override {
     return system_modal_ ? ui::MODAL_TYPE_SYSTEM : ui::MODAL_TYPE_NONE;
   }
 
  private:
   bool system_modal_;
 
   DISALLOW_COPY_AND_ASSIGN(TestDelegate);
 };
 
@@ skipping 974 matching lines @@
   keyboard_controller->ui()->GetKeyboardWindow()->SetBounds(
       gfx::Rect(0, 400, 800, 200));
   EXPECT_EQ("0,400 800x200", keyboard_container->bounds().ToString());
 
   UpdateDisplay("600x800");
   EXPECT_EQ("0,600 600x200", keyboard_container->bounds().ToString());
 }
 
 }  // namespace test
 }  // namespace ash