Fix nested border radius with composited child.

third_party/WebKit/Source/core/paint/PaintLayer.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 857 matching lines @@
                             GlobalPaintFlags);
   void AppendSingleFragmentIgnoringPagination(
       PaintLayerFragments&,
       const PaintLayer* root_layer,
       const LayoutRect& dirty_rect,
       ClipRectsCacheSlot,
       GeometryMapperOption,
       OverlayScrollbarClipBehavior = kIgnorePlatformOverlayScrollbarSize,
       ShouldRespectOverflowClipType = kRespectOverflowClip,
       const LayoutPoint* offset_from_root = 0,
-      const LayoutSize& sub_pixel_accumulation = LayoutSize());
+      const LayoutSize& sub_pixel_accumulation = LayoutSize()) const;
   void CollectFragments(
       PaintLayerFragments&,
       const PaintLayer* root_layer,
       const LayoutRect& dirty_rect,
       ClipRectsCacheSlot,
       GeometryMapperOption,
       OverlayScrollbarClipBehavior = kIgnorePlatformOverlayScrollbarSize,
       ShouldRespectOverflowClipType = kRespectOverflowClip,
       const LayoutPoint* offset_from_root = 0,
       const LayoutSize& sub_pixel_accumulation = LayoutSize(),
-      const LayoutRect* layer_bounding_box = 0);
+      const LayoutRect* layer_bounding_box = 0) const;
 
   LayoutPoint LayoutBoxLocation() const {
     return GetLayoutObject().IsBox() ? ToLayoutBox(GetLayoutObject()).Location()
                                      : LayoutPoint();
   }
 
   enum TransparencyClipBoxBehavior {
     kPaintingTransparencyClipBox,
     kHitTestingTransparencyClipBox
   };
@@ skipping 376 matching lines @@
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLayerTree(const blink::PaintLayer*);
 CORE_EXPORT void showLayerTree(const blink::LayoutObject*);
 #endif
 
 #endif  // Layer_h