Remove oak windows and its flags.

ui/oak/oak_details_model.h

-// 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.
-
-#ifndef UI_OAK_OAK_DETAILS_MODEL_H_
-#define UI_OAK_OAK_DETAILS_MODEL_H_
-
-#include "ui/base/models/table_model.h"
-
-namespace aura {
-class Window;
-}
-
-namespace oak {
-namespace internal {
-
-class OakDetailsModel : public ui::TableModel {
- public:
-  virtual ~OakDetailsModel() {}
-
-  virtual void SetValue(aura::Window* window) = 0;
-
- protected:
-  OakDetailsModel() {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(OakDetailsModel);
-};
-
-}  // namespace internal
-}  // namespace oak
-
-#endif  // UI_OAK_OAK_DETAILS_MODEL_H_