Add pixel readback to page popup

Source/web/WebPopupMenuImpl.h

Index: Source/web/WebPopupMenuImpl.h
diff --git a/Source/web/WebPopupMenuImpl.h b/Source/web/WebPopupMenuImpl.h
index c47e3bf30868df3ee4568937f55bbe1ff54793fe..4454235c907ff8cb7ed31f1bc0da331aa91c6691 100644
--- a/Source/web/WebPopupMenuImpl.h
+++ b/Source/web/WebPopupMenuImpl.h
@@ -86,6 +86,7 @@ public:
     virtual bool isAcceleratedCompositingActive() const OVERRIDE FINAL { return false; }
     virtual bool isPopupMenu() const OVERRIDE FINAL { return true; }
     virtual void willCloseLayerTreeView() OVERRIDE FINAL;
+    virtual WebWidgetClient* client() const OVERRIDE FINAL { return m_client; }
 
     // WebContentLayerClient
     virtual void paintContents(WebCanvas*, const WebRect& clip, bool canPaintLCDTest, WebFloatRect& opaque,
@@ -94,8 +95,6 @@ public:
     // WebPopupMenuImpl
     void initialize(FramelessScrollView* widget, const WebRect& bounds);
 
-    WebWidgetClient* client() { return m_client; }
-
     void handleMouseMove(const WebMouseEvent&);
     void handleMouseLeave(const WebMouseEvent&);
     void handleMouseDown(const WebMouseEvent&);