[LayoutNG] Abort a layout once the BFC offset is resolved.

third_party/WebKit/Source/core/layout/ng/ng_fragment_builder.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_fragment_builder.h"
 
 #include "core/layout/ng/inline/ng_physical_text_fragment.h"
 #include "core/layout/ng/ng_block_break_token.h"
 #include "core/layout/ng/ng_block_node.h"
 #include "core/layout/ng/ng_break_token.h"
@@ skipping 129 matching lines @@
   oof_positioned_candidates_.push_back(NGOutOfFlowPositionedCandidate{
       NGOutOfFlowPositionedDescendant{
           child, NGStaticPosition::Create(writing_mode_, direction_,
                                           NGPhysicalOffset())},
       child_offset});
 
   child.SaveStaticOffsetForLegacy(child_offset);
   return *this;
 }
 
-NGFragmentBuilder& NGFragmentBuilder::AddUnpositionedFloat(
-    RefPtr<NGUnpositionedFloat> unpositioned_float) {
-  unpositioned_floats_.push_back(std::move(unpositioned_float));
-  return *this;
-}
-
 void NGFragmentBuilder::GetAndClearOutOfFlowDescendantCandidates(
     Vector<NGOutOfFlowPositionedDescendant>* descendant_candidates) {
   DCHECK(descendant_candidates->IsEmpty());
 
   descendant_candidates->ReserveCapacity(oof_positioned_candidates_.size());
 
   DCHECK_GE(size_.inline_size, LayoutUnit());
   DCHECK_GE(size_.block_size, LayoutUnit());
   NGPhysicalSize builder_physical_size{size_.ConvertToPhysical(writing_mode_)};
 
@@ skipping 59 matching lines @@
         positioned_float.logical_offset.ConvertToPhysical(
             writing_mode_, direction_, physical_size,
             floating_fragment->Size()));
   }
 
   RefPtr<NGPhysicalBoxFragment> fragment = AdoptRef(new NGPhysicalBoxFragment(
       layout_object_, physical_size, overflow_.ConvertToPhysical(writing_mode_),
       children_, positioned_floats_, border_edges_.ToPhysical(writing_mode_),
       std::move(break_token)));
 
-  return AdoptRef(
-      new NGLayoutResult(std::move(fragment), oof_positioned_descendants_,
-                         unpositioned_floats_, bfc_offset_, end_margin_strut_));
+  return AdoptRef(new NGLayoutResult(
+      std::move(fragment), oof_positioned_descendants_, unpositioned_floats_,
+      bfc_offset_, end_margin_strut_, NGLayoutResult::kSuccess));
+}
+
+RefPtr<NGLayoutResult> NGFragmentBuilder::Abort(
+    NGLayoutResult::NGLayoutResultStatus status) {
+  return AdoptRef(new NGLayoutResult(
+      nullptr, Vector<NGOutOfFlowPositionedDescendant>(), unpositioned_floats_,
+      bfc_offset_, end_margin_strut_, status));
 }
 
 }  // namespace blink