WidgetDelegateView is its own contents view.

ash/magnifier/magnification_controller_unittest.cc

 // Copyright (c) 2013 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/magnifier/magnification_controller.h"
 
 #include "ash/common/accessibility_types.h"
 #include "ash/display/display_manager.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
@@ skipping 28 matching lines @@
     SetLayoutManager(new views::FillLayout);
   }
 
   ~TextInputView() override {}
 
   gfx::Size GetPreferredSize() const override {
     return gfx::Size(kTextInputWindowWidth, kTextInputWindowHeight);
   }
 
   // Overridden from views::WidgetDelegate:
-  views::View* GetContentsView() override { return this; }
-
   void FocusOnTextInput() { GetFocusManager()->SetFocusedView(text_field_); }
 
  private:
   views::Textfield* text_field_;  // owned by views hierarchy
 
   DISALLOW_COPY_AND_ASSIGN(TextInputView);
 };
 
 }  // namespace
 
@@ skipping 647 matching lines @@
   UpdateDisplay("500x500");
   EXPECT_EQ("0,0 500x500", screen->GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ(2.0f, GetMagnificationController()->GetScale());
 
   GetMagnificationController()->SetEnabled(false);
   EXPECT_EQ("0,0 500x500", screen->GetPrimaryDisplay().bounds().ToString());
   EXPECT_EQ(1.0f, GetMagnificationController()->GetScale());
 }
 
 }  // namespace ash