Clean up ReaderMode OverlayPanel classes

chrome/browser/android/compositor/layer/reader_mode_layer.h

-// Copyright 2016 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 CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_READER_MODE_LAYER_H_
-#define CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_READER_MODE_LAYER_H_
-
-#include <memory>
-
-#include "chrome/browser/android/compositor/layer/overlay_panel_layer.h"
-
-namespace cc {
-class Layer;
-}
-
-namespace ui {
-class ResourceManager;
-}
-
-namespace android {
-
-class ReaderModeLayer : public OverlayPanelLayer {
- public:
-  static scoped_refptr<ReaderModeLayer> Create(
-      ui::ResourceManager* resource_manager);
-
-  void SetProperties(float dp_to_px,
-                     const scoped_refptr<cc::Layer>& content_layer,
-                     float panel_x,
-                     float panel_y,
-                     float panel_width,
-                     float panel_height,
-                     float bar_margin_side,
-                     float bar_height,
-                     float text_opacity,
-                     bool bar_border_visible,
-                     float bar_border_height,
-                     bool bar_shadow_visible,
-                     float bar_shadow_opacity);
-
- protected:
-  explicit ReaderModeLayer(ui::ResourceManager* resource_manager);
-  ~ReaderModeLayer() override;
-};
-
-}  //  namespace android
-
-#endif  // CHROME_BROWSER_ANDROID_COMPOSITOR_LAYER_READER_MODE_LAYER_H_