[WIP][b:eae_mywip_paint] Paint Selection NG.

third_party/WebKit/Source/core/layout/ng/inline/ng_inline_items_builder.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 NGInlineItemsBuilder_h
 #define NGInlineItemsBuilder_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/inline/ng_inline_node.h"
 #include "platform/wtf/Allocator.h"
@@ skipping 14 matching lines @@
 // https://drafts.csswg.org/css-text-3/#white-space-rules
 //
 // By calling EnterInline/ExitInline, it inserts bidirectional control
 // characters as defined in:
 // https://drafts.csswg.org/css-writing-modes-3/#bidi-control-codes-injection-table
 class CORE_EXPORT NGInlineItemsBuilder {
   STACK_ALLOCATED();
 
  public:
   explicit NGInlineItemsBuilder(Vector<NGInlineItem>* items) : items_(items) {}
+  explicit NGInlineItemsBuilder(Vector<NGInlineItem>* items,
+                                Vector<int>* offset_mapping)
+      : items_(items), offset_mapping_(offset_mapping) {}

[kojii, 2017/06/16 11:25:56]

this isn't for review, correct?

   ~NGInlineItemsBuilder();
 
   String ToString();
 
   void SetIsSVGText(bool value) { is_svgtext_ = value; }
 
   // Returns whether the items contain any Bidi controls.
   bool HasBidiControls() const { return has_bidi_controls_; }
 
   // Append a string.
@@ skipping 27 matching lines @@
   void AppendBidiControl(const ComputedStyle*, UChar ltr, UChar rtl);
 
   void EnterBlock(const ComputedStyle*);
   void ExitBlock();
   void EnterInline(LayoutObject*);
   void ExitInline(LayoutObject*);
 
  private:
   Vector<NGInlineItem>* items_;
   StringBuilder text_;
+  Vector<int>* offset_mapping_ = nullptr;
 
   typedef struct OnExitNode {
     LayoutObject* node;
     UChar character;
   } OnExitNode;
   Vector<OnExitNode> exits_;
 
   enum class CollapsibleSpace { kNone, kSpace, kNewline };
 
   CollapsibleSpace last_collapsible_space_ = CollapsibleSpace::kSpace;
@@ skipping 29 matching lines @@
                                                 unsigned,
                                                 const ComputedStyle*);
 
   void Enter(LayoutObject*, UChar);
   void Exit(LayoutObject*);
 };
 
 }  // namespace blink
 
 #endif  // NGInlineItemsBuilder_h