| // 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_WEB_CONTENTS_CLOSE_HANDLER_DELEGATE_H_ |
| #define CHROME_BROWSER_UI_VIEWS_FRAME_WEB_CONTENTS_CLOSE_HANDLER_DELEGATE_H_ |
| |
| #include "base/memory/scoped_ptr.h" |
| |
| namespace ui { |
| class LayerTreeOwner; |
| } |
| |
| // WebContentsCloseHandler delegate. |
| class WebContentsCloseHandlerDelegate { |
| public: |
| // Invoked to clone the layers of the WebContents. Should do nothing if there |
| // is already a clone (eg CloneWebContentsLayer() has been invoked without a |
| // DestroyClonedLayer()) or no WebContents. It is expected that when this is |
| // invoked the cloned layer tree is drawn on top of the existing WebContents. |
| virtual void CloneWebContentsLayer() = 0; |
| |
| // Invoked to destroy the cloned layer tree. This may be invoked when there is |
| // no cloned layer tree. |
| virtual void DestroyClonedLayer() = 0; |
| |
| protected: |
| virtual ~WebContentsCloseHandlerDelegate() {} |
| }; |
| |
| #endif // CHROME_BROWSER_UI_VIEWS_FRAME_WEB_CONTENTS_CLOSE_HANDLER_DELEGATE_H_ |