[LayoutNG] Allow block-flow layout to be fragmented using new approach.

third_party/WebKit/Source/core/layout/ng/ng_inline_node.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_inline_node.h"
 
 #include "core/layout/LayoutBlockFlow.h"
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutText.h"
 #include "core/layout/ng/ng_bidi_paragraph.h"
@@ skipping 223 matching lines @@
   for (auto& item : items_) {
     // Skip object replacement characters and bidi control characters.
     if (!item.style_)
       continue;
 
     item.shape_result_ = shaper.shape(&item.Style()->font(), item.Direction(),
                                       item.StartOffset(), item.EndOffset());
   }
 }
 
-RefPtr<NGLayoutResult> NGInlineNode::Layout(NGConstraintSpace*) {
+RefPtr<NGLayoutResult> NGInlineNode::Layout(NGConstraintSpace*, NGBreakToken*) {
   ASSERT_NOT_REACHED();
   return nullptr;
 }
 
 void NGInlineNode::LayoutInline(NGConstraintSpace* constraint_space,
                                 NGLineBuilder* line_builder) {
   PrepareLayout();
 
   if (text_content_.isEmpty())
     return;
@@ skipping 69 matching lines @@
     Vector<NGLayoutInlineItem>* items,
     unsigned start_index,
     unsigned end_index)
     : start_item_(&(*items)[start_index]),
       size_(end_index - start_index),
       start_index_(start_index) {
   RELEASE_ASSERT(start_index <= end_index && end_index <= items->size());
 }
 
 }  // namespace blink