[LayoutNG] Add NGLineBoxFragment

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/ng_block_break_token.h"
 #include "core/layout/ng/ng_block_node.h"
 #include "core/layout/ng/ng_break_token.h"
 #include "core/layout/ng/ng_fragment.h"
@@ skipping 143 matching lines @@
 
 NGFragmentBuilder& NGFragmentBuilder::AddOutOfFlowDescendant(
     NGBlockNode* descendant,
     const NGStaticPosition& position) {
   out_of_flow_descendants_.insert(descendant);
   out_of_flow_positions_.push_back(position);
   return *this;
 }
 
 RefPtr<NGLayoutResult> NGFragmentBuilder::ToBoxFragment() {
-  // TODO(layout-ng): Support text fragments
   DCHECK_EQ(type_, NGPhysicalFragment::kFragmentBox);
   DCHECK_EQ(offsets_.size(), children_.size());
 
   NGPhysicalSize physical_size = size_.ConvertToPhysical(writing_mode_);
 
   for (size_t i = 0; i < children_.size(); ++i) {
     NGPhysicalFragment* child = children_[i].get();
     child->SetOffset(offsets_[i].ConvertToPhysical(
         writing_mode_, direction_, physical_size, child->Size()));
   }
@@ skipping 16 matching lines @@
   RefPtr<NGPhysicalBoxFragment> fragment = adoptRef(new NGPhysicalBoxFragment(
       node_->GetLayoutObject(), physical_size,
       overflow_.ConvertToPhysical(writing_mode_), children_, positioned_floats_,
       bfc_offset_, end_margin_strut_, std::move(break_token)));
 
   return adoptRef(
       new NGLayoutResult(std::move(fragment), out_of_flow_descendants_,
                          out_of_flow_positions_, unpositioned_floats_));
 }
 
-RefPtr<NGPhysicalTextFragment> NGFragmentBuilder::ToTextFragment(
-    unsigned index,
-    unsigned start_offset,
-    unsigned end_offset) {
-  DCHECK_EQ(type_, NGPhysicalFragment::kFragmentText);
-  DCHECK(children_.isEmpty());
-  DCHECK(offsets_.isEmpty());
-
-  return adoptRef(new NGPhysicalTextFragment(
-      node_->GetLayoutObject(), toNGInlineNode(node_), index, start_offset,
-      end_offset, size_.ConvertToPhysical(writing_mode_),
-      overflow_.ConvertToPhysical(writing_mode_)));
-}
-
 }  // namespace blink