Stop clipping to visual rect bounds in PLC::CalculateBackgroundClipRect

third_party/WebKit/Source/core/paint/PaintLayerClipper.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 205 matching lines @@
   ClipRects& StoreClipRectsInCache(const ClipRectsContext&,
                                    ClipRects* parent_clip_rects,
                                    const ClipRects&) const;
 
   void GetOrCalculateClipRects(const ClipRectsContext&, ClipRects&) const;
 
   ALWAYS_INLINE bool ShouldClipOverflow(const ClipRectsContext&) const;
   ALWAYS_INLINE bool ShouldRespectOverflowClip(const ClipRectsContext&) const;
 
   // Returned clip rect in |output| is in the space of the context's rootLayer.
+  // if |should_clip_to_visual_overflow| is true, clips to the bounds of the
+  // visual overflow of |layer_|.
   ALWAYS_INLINE void CalculateBackgroundClipRectWithGeometryMapper(
       const ClipRectsContext&,
-      ClipRect& output) const;
+      ClipRect& output,
+      bool should_clip_to_visual_overflow) const;
 
   ALWAYS_INLINE void InitializeCommonClipRectState(
       const ClipRectsContext&,
       PropertyTreeState& descendant_property_tree_state,
       PropertyTreeState& ancestor_property_tree_state) const;
 
   // Same as calculateRects, but using GeometryMapper.
   ALWAYS_INLINE void CalculateRectsWithGeometryMapper(
       const ClipRectsContext&,
       const LayoutRect& paint_dirty_rect,
       LayoutRect& layer_bounds,
       ClipRect& background_rect,
       ClipRect& foreground_rect,
       const LayoutPoint* offset_from_root = 0) const;
 
   // Returns the visual rect of m_layer in local space. This includes
   // filter effects.
   ALWAYS_INLINE LayoutRect LocalVisualRect() const;
 
   const PaintLayer& layer_;
   bool use_geometry_mapper_;
 
   friend class PaintLayerClipperTest;
 };
 
 }  // namespace blink
 
 #endif  // LayerClipper_h