Add 'printing' flag to PaintInfo

Source/core/paint/PaintInfo.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 60 matching lines @@
 
     bool shouldPaintWithinRoot(const LayoutObject* layoutObject) const
     {
         return !paintingRoot || paintingRoot == layoutObject;
     }
 
     bool isRenderingClipPathAsMaskImage() const { return paintBehavior & PaintBehaviorRenderingClipPathAsMask; }
 
     bool skipRootBackground() const { return paintBehavior & PaintBehaviorSkipRootBackground; }
     bool paintRootBackgroundOnly() const { return paintBehavior & PaintBehaviorRootBackgroundOnly; }
+    bool isPrinting() const { return paintBehavior & PaintBehaviorPrinting; }
 
     DisplayItem::Type displayItemTypeForClipping() const { return DisplayItem::paintPhaseToClipBoxType(phase); }
 
     const LayoutBoxModelObject* paintContainer() const { return m_paintContainer; }
 
     ListHashSet<LayoutInline*>* outlineObjects() const { return m_outlineObjects; }
     void setOutlineObjects(ListHashSet<LayoutInline*>* objects) { m_outlineObjects = objects; }
 
     // TODO(jchaffraix): Split the GlobalPaintFlags out of paintBehavior into its own field.
     GlobalPaintFlags globalPaintFlags() const { return toGlobalPaintFlags(paintBehavior); }
@@ skipping 17 matching lines @@
     LayoutObject* paintingRoot; // used to draw just one element and its visual kids
 
 private:
     const LayoutBoxModelObject* m_paintContainer; // the box model object that originates the current painting
     ListHashSet<LayoutInline*>* m_outlineObjects; // used to list outlines that should be painted by a block with inline children
 };
 
 } // namespace blink
 
 #endif // PaintInfo_h