It is time.

ui/base/default_theme_provider.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_BASE_DEFAULT_THEME_PROVIDER_H_
-#define UI_BASE_DEFAULT_THEME_PROVIDER_H_
-
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "ui/base/theme_provider.h"
-#include "ui/base/ui_base_export.h"
-
-namespace ui {
-class ResourceBundle;
-}
-
-namespace ui {
-
-class UI_BASE_EXPORT DefaultThemeProvider : public ThemeProvider {
- public:
-  DefaultThemeProvider();
-  ~DefaultThemeProvider() override;
-
-  // Overridden from ui::ThemeProvider:
-  bool UsingSystemTheme() const override;
-  gfx::ImageSkia* GetImageSkiaNamed(int id) const override;
-  SkColor GetColor(int id) const override;
-  int GetDisplayProperty(int id) const override;
-  bool ShouldUseNativeFrame() const override;
-  bool HasCustomImage(int id) const override;
-  base::RefCountedMemory* GetRawData(int id, ui::ScaleFactor scale_factor)
-      const override;
-
-#if defined(OS_MACOSX)
-  NSImage* GetNSImageNamed(int id) const override;
-  NSColor* GetNSImageColorNamed(int id) const override;
-  NSColor* GetNSColor(int id) const override;
-  NSColor* GetNSColorTint(int id) const override;
-  NSGradient* GetNSGradient(int id) const override;
-#endif
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(DefaultThemeProvider);
-};
-
-}  // namespace ui
-
-#endif  // UI_BASE_DEFAULT_THEME_PROVIDER_H_