mix-blend-mode implementation for accelerated layers - blink part

Source/core/rendering/RenderLayer.h

 /*
  * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
@@ skipping 601 matching lines @@
     RenderLayer* enclosingTransformedAncestor() const;
 
     void updatePagination();
 
     // FIXME: Temporary. Remove when new columns come online.
     bool useRegionBasedColumns() const;
 
     bool hasCompositingDescendant() const { return m_compositingProperties.hasCompositingDescendant; }
     void setHasCompositingDescendant(bool b)  { m_compositingProperties.hasCompositingDescendant = b; }
 
+    bool hasCompositedBlendingDescendants() const { return m_hasCompositedBlendingDescendants; }
+    void setHasCompositedBlendingDescendants(bool b)  { m_hasCompositedBlendingDescendants = b; }
+
     void setCompositingReasons(CompositingReasons reasons) { m_compositingProperties.compositingReasons = reasons; }
     CompositingReasons compositingReasons() const { return m_compositingProperties.compositingReasons; }
 
     friend class CompositedLayerMapping;
     friend class RenderLayerCompositor;
     friend class RenderLayerModelObject;
 
 protected:
     unsigned m_isSelfPaintingLayer : 1;
 
@@ skipping 41 matching lines @@
 
     unsigned m_containsDirtyOverlayScrollbars : 1;
 
     // This is an optimization added for <table>.
     // Currently cells do not need to update their repaint rectangles when scrolling. This also
     // saves a lot of time when scrolling on a table.
     const unsigned m_canSkipRepaintRectsUpdateOnScroll : 1;
 
     unsigned m_hasFilterInfo : 1;
 
+    unsigned m_hasCompositedBlendingDescendants : 1;
+
     BlendMode m_blendMode;
 
     RenderLayerModelObject* m_renderer;
 
     RenderLayer* m_parent;
     RenderLayer* m_previous;
     RenderLayer* m_next;
     RenderLayer* m_first;
     RenderLayer* m_last;
 
@@ skipping 59 matching lines @@
 
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showLayerTree(const WebCore::RenderLayer*);
 void showLayerTree(const WebCore::RenderObject*);
 #endif
 
 #endif // RenderLayer_h