Fix nested border radius with composited child.

third_party/WebKit/Source/core/paint/PaintLayer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. 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 1571 matching lines @@
 
 void PaintLayer::AppendSingleFragmentIgnoringPagination(
     PaintLayerFragments& fragments,
     const PaintLayer* root_layer,
     const LayoutRect& dirty_rect,
     ClipRectsCacheSlot clip_rects_cache_slot,
     PaintLayer::GeometryMapperOption geometry_mapper_option,
     OverlayScrollbarClipBehavior overlay_scrollbar_clip_behavior,
     ShouldRespectOverflowClipType respect_overflow_clip,
     const LayoutPoint* offset_from_root,
-    const LayoutSize& sub_pixel_accumulation) {
+    const LayoutSize& sub_pixel_accumulation) const {
   PaintLayerFragment fragment;
   ClipRectsContext clip_rects_context(root_layer, clip_rects_cache_slot,
                                       overlay_scrollbar_clip_behavior,
                                       sub_pixel_accumulation);
   if (respect_overflow_clip == kIgnoreOverflowClip)
     clip_rects_context.SetIgnoreOverflowClip();
   Clipper(geometry_mapper_option)
       .CalculateRects(clip_rects_context, dirty_rect, fragment.layer_bounds,
                       fragment.background_rect, fragment.foreground_rect,
                       offset_from_root);
@@ skipping 10 matching lines @@
 void PaintLayer::CollectFragments(
     PaintLayerFragments& fragments,
     const PaintLayer* root_layer,
     const LayoutRect& dirty_rect,
     ClipRectsCacheSlot clip_rects_cache_slot,
     PaintLayer::GeometryMapperOption geometry_mapper_option,
     OverlayScrollbarClipBehavior overlay_scrollbar_clip_behavior,
     ShouldRespectOverflowClipType respect_overflow_clip,
     const LayoutPoint* offset_from_root,
     const LayoutSize& sub_pixel_accumulation,
-    const LayoutRect* layer_bounding_box) {
+    const LayoutRect* layer_bounding_box) const {
   // For unpaginated layers, there is only one fragment. We also avoid
   // fragmentation when compositing, due to implementation limitations.
   if (!EnclosingPaginationLayer() ||
       !ShouldFragmentCompositedBounds(root_layer)) {
     AppendSingleFragmentIgnoringPagination(
         fragments, root_layer, dirty_rect, clip_rects_cache_slot,
         geometry_mapper_option, overlay_scrollbar_clip_behavior,
         respect_overflow_clip, offset_from_root, sub_pixel_accumulation);
     return;
   }
@@ skipping 1714 matching lines @@
 }
 
 void showLayerTree(const blink::LayoutObject* layoutObject) {
   if (!layoutObject) {
     LOG(INFO) << "Cannot showLayerTree. Root is (nil)";
     return;
   }
   showLayerTree(layoutObject->EnclosingLayer());
 }
 #endif