[LayoutNG] Implement 'text-align-last'

third_party/WebKit/Source/core/layout/ng/inline/ng_line_breaker.h

 // Copyright 2017 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 NGLineBreaker_h
 #define NGLineBreaker_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/inline/ng_inline_item_result.h"
 #include "core/layout/ng/inline/ng_inline_node.h"
@@ skipping 20 matching lines @@
                 const NGConstraintSpace*,
                 NGInlineBreakToken* = nullptr);
   ~NGLineBreaker() {}
   STACK_ALLOCATED();
 
   // Compute the next line break point and produces NGInlineItemResults for
   // the line.
   // TODO(kojii): NGInlineLayoutAlgorithm is needed because floats require
   // not only constraint space but also container builder. Consider refactor
   // not to require algorithm.
-  void NextLine(NGInlineItemResults*, NGInlineLayoutAlgorithm*);
+  bool NextLine(NGLineInfo*, NGInlineLayoutAlgorithm*);
 
   // Create an NGInlineBreakToken for the last line returned by NextLine().
   RefPtr<NGInlineBreakToken> CreateBreakToken() const;
 
  private:
-  void BreakLine(NGInlineItemResults*, NGInlineLayoutAlgorithm*);
+  void BreakLine(NGLineInfo*, NGInlineLayoutAlgorithm*);
 
   enum class LineBreakState {
     // The current position is not breakable.
     kNotBreakable,
     // The current position is breakable.
     kIsBreakable,
     // Break by including trailing items (CloseTag).
     kBreakAfterTrailings,
     // Break immediately.
     kForcedBreak
   };
 
   LineBreakState HandleText(const NGInlineItem&, NGInlineItemResult*);
   void BreakText(NGInlineItemResult*,
                  const NGInlineItem&,
                  LayoutUnit available_width);
 
   LineBreakState HandleControlItem(const NGInlineItem&, NGInlineItemResult*);
   LineBreakState HandleAtomicInline(const NGInlineItem&, NGInlineItemResult*);
   void HandleFloat(const NGInlineItem&,
                    NGInlineItemResults*,
                    NGInlineLayoutAlgorithm*);
 
   void HandleOpenTag(const NGInlineItem&, NGInlineItemResult*);
   void HandleCloseTag(const NGInlineItem&, NGInlineItemResult*);
 
-  void HandleOverflow(NGInlineItemResults*);
-  void Rewind(NGInlineItemResults*, unsigned new_end);
+  void HandleOverflow(NGLineInfo*);
+  void Rewind(NGLineInfo*, unsigned new_end);
 
   void UpdateBreakIterator(const ComputedStyle&);
 
   void MoveToNextOf(const NGInlineItem&);
   void MoveToNextOf(const NGInlineItemResult&);
   void SkipCollapsibleWhitespaces();
 
   NGInlineNode node_;
   const NGConstraintSpace* constraint_space_;
   const AtomicString locale_;
   unsigned item_index_;
   unsigned offset_;
   LayoutUnit available_width_;
   LayoutUnit position_;
   LazyLineBreakIterator break_iterator_;
   HarfBuzzShaper shaper_;
 
   unsigned auto_wrap_ : 1;
 };
 
 }  // namespace blink
 
 #endif  // NGLineBreaker_h