Fix border radius on composited children.

third_party/WebKit/Source/platform/graphics/GraphicsLayer.cpp

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 781 matching lines @@
     if ((flags & LayerTreeIncludesPaintingPhases) && m_paintingPhase) {
         std::unique_ptr<JSONArray> paintingPhasesJSON = JSONArray::create();
         if (m_paintingPhase & GraphicsLayerPaintBackground)
             paintingPhasesJSON->pushString("GraphicsLayerPaintBackground");
         if (m_paintingPhase & GraphicsLayerPaintForeground)
             paintingPhasesJSON->pushString("GraphicsLayerPaintForeground");
         if (m_paintingPhase & GraphicsLayerPaintMask)
             paintingPhasesJSON->pushString("GraphicsLayerPaintMask");
         if (m_paintingPhase & GraphicsLayerPaintChildClippingMask)
             paintingPhasesJSON->pushString("GraphicsLayerPaintChildClippingMask");
+        if (m_paintingPhase & GraphicsLayerPaintAncestorClippingMask)
+            paintingPhasesJSON->pushString("GraphicsLayerPaintAncestorClippingMask");
         if (m_paintingPhase & GraphicsLayerPaintOverflowContents)
             paintingPhasesJSON->pushString("GraphicsLayerPaintOverflowContents");
         if (m_paintingPhase & GraphicsLayerPaintCompositedScroll)
             paintingPhasesJSON->pushString("GraphicsLayerPaintCompositedScroll");
         json->setArray("paintingPhases", std::move(paintingPhasesJSON));
     }
 
     if (flags & LayerTreeIncludesClipAndScrollParents) {
         if (m_hasScrollParent)
             json->setBoolean("hasScrollParent", true);
@@ skipping 534 matching lines @@
 {
     if (!layer) {
         fprintf(stderr, "Cannot showGraphicsLayerTree for (nil).\n");
         return;
     }
 
     String output = layer->layerTreeAsText(blink::LayerTreeIncludesDebugInfo);
     fprintf(stderr, "%s\n", output.utf8().data());
 }
 #endif