[css-grid] Fix positioning of positioned grid children

third_party/WebKit/Source/core/layout/LayoutGrid.cpp

 /*
  * Copyright (C) 2011 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 2594 matching lines @@
   childLayer->setStaticBlockPosition(borderAndPaddingBefore());
 }
 
 void LayoutGrid::layoutPositionedObjects(bool relayoutChildren,
                                          PositionedLayoutBehavior info) {
   TrackedLayoutBoxListHashSet* positionedDescendants = positionedObjects();
   if (!positionedDescendants)
     return;
 
   for (auto* child : *positionedDescendants) {
-    if (!child->needsLayout())
-      continue;
-
     if (isOrthogonalChild(*child)) {
       // FIXME: Properly support orthogonal writing mode.
       continue;
     }
 
     LayoutUnit columnOffset = LayoutUnit();
     LayoutUnit columnBreadth = LayoutUnit();
     offsetAndBreadthForPositionedChild(*child, ForColumns, columnOffset,
                                        columnBreadth);
     LayoutUnit rowOffset = LayoutUnit();
@@ skipping 1002 matching lines @@
   if (direction == ForRows)
     return grid.numTracks(ForRows);
 
   return grid.numTracks(ForRows)
              ? grid.numTracks(ForColumns)
              : GridPositionsResolver::explicitGridColumnCount(
                    styleRef(), grid.autoRepeatTracks(ForColumns));
 }
 
 }  // namespace blink