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

third_party/WebKit/Source/core/layout/ng/ng_inline_node.h

 // 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.
 
 #ifndef NGInlineNode_h
 #define NGInlineNode_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/ng_layout_input_node.h"
 #include "platform/fonts/FontFallbackPriority.h"
@@ skipping 19 matching lines @@
 class NGLineBuilder;
 
 // Represents an inline node to be laid out.
 class CORE_EXPORT NGInlineNode : public NGLayoutInputNode {
  public:
   NGInlineNode(LayoutObject* start_inline, const ComputedStyle* block_style);
   ~NGInlineNode() override;
 
   const ComputedStyle* BlockStyle() const { return block_style_.get(); }
 
-  RefPtr<NGLayoutResult> Layout(NGConstraintSpace*) override;
+  RefPtr<NGLayoutResult> Layout(NGConstraintSpace*, NGBreakToken*) override;
   void LayoutInline(NGConstraintSpace*, NGLineBuilder*);
   NGInlineNode* NextSibling() override;
   LayoutObject* GetLayoutObject() override;
 
   // Prepare inline and text content for layout. Must be called before
   // calling the Layout method.
   void PrepareLayout();
 
   const String& Text() const { return text_content_; }
   String Text(unsigned start_offset, unsigned end_offset) const {
@@ skipping 161 matching lines @@
 
  private:
   NGLayoutInlineItem* start_item_;
   unsigned size_;
   unsigned start_index_;
 };
 
 }  // namespace blink
 
 #endif  // NGInlineNode_h