Add pixel readback to page popup

Source/core/testing/Internals.idl

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 64 matching lines @@
     DOMString visiblePlaceholder(Element element);
 
     [TypeChecking=Interface] void selectColorInColorChooser(Element element, DOMString colorValue);
 
     // If the argument is omitted, the top-level document is used.
     boolean hasAutofocusRequest(optional Document document);
     [RaisesException] DOMString[] formControlStateOfHistoryItem();
     [RaisesException] void setFormControlStateOfHistoryItem(sequence<DOMString> values);
     [RaisesException] void setEnableMockPagePopup(boolean enabled);
     readonly attribute PagePopupController pagePopupController;
+    readonly attribute Window pagePopupWindow;
 
     [RaisesException] ClientRect absoluteCaretBounds();
 
     [TypeChecking=Interface] ClientRect boundingBox(Element element);
 
     [RaisesException, TypeChecking=Interface] unsigned long markerCountForNode(Node node, DOMString markerType);
     [TypeChecking=Interface] unsigned long activeMarkerCountForNode(Node node);
     [RaisesException, TypeChecking=Interface] Range markerRangeForNode(Node node, DOMString markerType, unsigned long index);
     [RaisesException, TypeChecking=Interface] DOMString markerDescriptionForNode(Node node, DOMString markerType, unsigned long index);
     [TypeChecking=Interface] void addTextMatchMarker(Range range, boolean isActive);
@@ skipping 178 matching lines @@
     // This function is for testing HitRegions on Canvas2D.
     unsigned long countHitRegions(CanvasRenderingContext2D context);
 
     DOMString serializeNavigationMarkup();
     void hideAllTransitionElements();
 
     [RaisesException] void forcePluginPlaceholder(HTMLElement plugin, DOMString htmlSource);
 
     DictionaryTest dictionaryTest();
 };