Remove unused foregroundRect argument to RenderLayerClipper::calculateRects.

sky/engine/core/rendering/RenderLayerClipper.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 65 matching lines @@
 };
 
 class RenderLayerClipper {
     WTF_MAKE_NONCOPYABLE(RenderLayerClipper);
 public:
     explicit RenderLayerClipper(RenderBox&);
 
     void clearClipRectsIncludingDescendants();
     void clearClipRectsIncludingDescendants(ClipRectsCacheSlot);
 
-    LayoutRect childrenClipRect() const; // Returns the foreground clip rect of the layer in the document's coordinate space.
     LayoutRect localClipRect() const; // Returns the background clip rect of the layer in the local coordinate space.
 
     ClipRects* getClipRects(const ClipRectsContext&) const;
 
     ClipRect backgroundClipRect(const ClipRectsContext&) const;
 
     // This method figures out our layerBounds in coordinates relative to
-    // |rootLayer|. It also computes our background and foreground clip rects
-    // for painting/event handling.
-    // Pass offsetFromRoot if known.
+    // |rootLayer|. It also computes our clip rects for painting/event handling.
     void calculateRects(const ClipRectsContext&, const LayoutRect& paintDirtyRect, LayoutRect& layerBounds,
-        ClipRect& backgroundRect, ClipRect& foregroundRect, const LayoutPoint* offsetFromRoot = 0) const;
+        ClipRect& backgroundRect, const LayoutPoint* offsetFromRoot = 0) const;
 
 private:
     void calculateClipRects(const ClipRectsContext&, ClipRects&) const;
 
     ClipRects* clipRectsIfCached(const ClipRectsContext&) const;
     ClipRects* storeClipRectsInCache(const ClipRectsContext&, ClipRects* parentClipRects, const ClipRects&) const;
 
     // cachedClipRects looks buggy: It doesn't check whether context.rootLayer and entry.root match.
     // FIXME: Move callers to clipRectsIfCached, which does the proper checks.
     ClipRects* cachedClipRects(const ClipRectsContext& context) const
@@ skipping 13 matching lines @@
     }
 
     // FIXME: Could this be a RenderBox?
     RenderBox& m_renderer;
     mutable OwnPtr<ClipRectsCache> m_cache;
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_RENDERING_RENDERLAYERCLIPPER_H_