Remove obsolete NGConstraintSpace::ChildSpace

third_party/WebKit/Source/core/layout/ng/ng_constraint_space.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/layout/ng/ng_constraint_space.h"
 
 #include "core/layout/LayoutBlock.h"
 #include "core/layout/LayoutView.h"
 #include "core/layout/ng/ng_constraint_space_builder.h"
 #include "core/layout/ng/ng_layout_opportunity_iterator.h"
@@ skipping 84 matching lines @@
   // TODO(layout-ng): Implement.
 }
 
 NGLayoutOpportunityIterator* NGConstraintSpace::LayoutOpportunities(
     unsigned clear,
     bool for_inline_or_bfc) {
   NGLayoutOpportunityIterator* iterator = new NGLayoutOpportunityIterator(this);
   return iterator;
 }
 
-NGConstraintSpace* NGConstraintSpace::ChildSpace(
-    const ComputedStyle* style) const {
-  return NGConstraintSpaceBuilder(this)
-      .SetWritingMode(FromPlatformWritingMode(style->getWritingMode()))
-      .SetTextDirection(style->direction())
-      .ToConstraintSpace();
-}
-
 String NGConstraintSpace::ToString() const {
   return String::format("%s,%s %sx%s",
                         offset_.inline_offset.toString().ascii().data(),
                         offset_.block_offset.toString().ascii().data(),
                         AvailableSize().inline_size.toString().ascii().data(),
                         AvailableSize().block_size.toString().ascii().data());
 }
 
 }  // namespace blink