text: // Copyright 2014 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_UI_VIEWS_FRAME_CONTENTS_WEB_VIEW_H_
  #define CHROME_BROWSER_UI_VIEWS_FRAME_CONTENTS_WEB_VIEW_H_
  
  #include <memory>
  
  #include "base/compiler_specific.h"
  #include "base/macros.h"
  #include "chrome/browser/ui/views/frame/web_contents_close_handler_delegate.h"
  #include "ui/base/metadata/metadata_header_macros.h"
  #include "ui/views/controls/webview/webview.h"
  
  class StatusBubbleViews;
  
  namespace ui {
  class LayerTreeOwner;
  }
  
  // ContentsWebView is used to present the WebContents of the active tab.
  class ContentsWebView
      : public views::WebView,
        public WebContentsCloseHandlerDelegate {
   public:
    METADATA_HEADER(ContentsWebView);
    explicit ContentsWebView(content::BrowserContext* browser_context);
    ContentsWebView(const ContentsWebView&) = delete;
    ContentsWebView& operator=(const ContentsWebView&) = delete;
    ~ContentsWebView() override;
  
    // Sets the status bubble, which should be repositioned every time
    // this view changes visible bounds.
    void SetStatusBubble(StatusBubbleViews* status_bubble);
    StatusBubbleViews* GetStatusBubble() const;
  
    // WebView overrides:
    bool GetNeedsNotificationWhenVisibleBoundsChange() const override;
    void OnVisibleBoundsChanged() override;
    void ViewHierarchyChanged(
        const views::ViewHierarchyChangedDetails& details) override;
    void OnThemeChanged() override;
    void RenderViewReady() override;
    void OnLetterboxingChanged() override;
  
    // ui::View overrides:
    std::unique_ptr<ui::Layer> RecreateLayer() override;
  
    // WebContentsCloseHandlerDelegate overrides:
    void CloneWebContentsLayer() override;
    void DestroyClonedLayer() override;
  
   private:
    void UpdateBackgroundColor();
    StatusBubbleViews* status_bubble_;
  
    std::unique_ptr<ui::LayerTreeOwner> cloned_layer_tree_;
  };
  
  #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_CONTENTS_WEB_VIEW_H_
  