Add pixel readback to page popup

Source/web/WebPagePopupImpl.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 45 matching lines @@
     WTF_MAKE_NONCOPYABLE(WebPagePopupImpl);
     WTF_MAKE_FAST_ALLOCATED;
 
 public:
     virtual ~WebPagePopupImpl();
     bool initialize(WebViewImpl*, PagePopupClient*, const IntRect& originBoundsInRootView);
     bool handleKeyEvent(const PlatformKeyboardEvent&);
     void closePopup();
     WebWidgetClient* widgetClient() const { return m_widgetClient; }
     bool hasSamePopupClient(WebPagePopupImpl* other) { return other && m_popupClient == other->m_popupClient; }
+    virtual void compositeAndReadbackAsync(WebCompositeAndReadbackAsyncCallback*) OVERRIDE;
 
 private:
     // WebWidget functions
     virtual WebSize size() OVERRIDE;
     virtual void beginFrame(const WebBeginFrameArgs&) OVERRIDE;
     virtual void layout() OVERRIDE;
     virtual void willCloseLayerTreeView() OVERRIDE;
     virtual void paint(WebCanvas*, const WebRect&) OVERRIDE;
     virtual void resize(const WebSize&) OVERRIDE;
     virtual void close() OVERRIDE;
     virtual bool handleInputEvent(const WebInputEvent&) OVERRIDE;
     virtual void setFocus(bool) OVERRIDE;
     virtual bool isPagePopup() const OVERRIDE { return true; }
     virtual bool isAcceleratedCompositingActive() const OVERRIDE { return m_isAcceleratedCompositingActive; }
+    virtual WebWidgetClient* client() const OVERRIDE { return m_widgetClient; }
 
     // PageWidgetEventHandler functions
     virtual bool handleKeyEvent(const WebKeyboardEvent&) OVERRIDE;
     virtual bool handleCharEvent(const WebKeyboardEvent&) OVERRIDE;
     virtual bool handleGestureEvent(const WebGestureEvent&) OVERRIDE;
 
     // PagePopup function
     virtual AXObject* rootAXObject() OVERRIDE;
 
     explicit WebPagePopupImpl(WebWidgetClient*);
@@ skipping 19 matching lines @@
     friend class PagePopupChromeClient;
 };
 
 DEFINE_TYPE_CASTS(WebPagePopupImpl, WebWidget, widget, widget->isPagePopup(), widget.isPagePopup());
 // WebPagePopupImpl is the only implementation of PagePopup, so no
 // further checking required.
 DEFINE_TYPE_CASTS(WebPagePopupImpl, PagePopup, popup, true, true);
 
 } // namespace blink
 #endif // WebPagePopupImpl_h