[LayoutNG] Paint inlines from the fragment tree

third_party/WebKit/Source/core/paint/InlineTextBoxPainter.cpp

 // Copyright 2014 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/paint/InlineTextBoxPainter.h"
 
 #include "core/editing/CompositionUnderline.h"
 #include "core/editing/Editor.h"
 #include "core/editing/markers/DocumentMarkerController.h"
 #include "core/frame/LocalFrame.h"
@@ skipping 49 matching lines @@
     if (!current)
       return current;
 
     if (Node* node = current.GetNode()) {
       if (isHTMLAnchorElement(node) || node->HasTagName(HTMLNames::fontTag))
         return current;
     }
   }
 }
 
+// TODO(eae): Move
+// Needs offset for root baseline and and logical top for self
+// and furthers position for underline
 static int ComputeUnderlineOffsetForUnder(
     const ComputedStyle& style,
     const InlineTextBox* inline_text_box,
     LineLayoutItem decorating_box,
     float text_decoration_thickness,
     LineVerticalPositionType position_type) {
   const RootInlineBox& root = inline_text_box->Root();
   FontBaseline baseline_type = root.BaselineType();
   LayoutUnit offset = inline_text_box->OffsetTo(position_type, baseline_type);
 
@@ skipping 1101 matching lines @@
 
   LayoutRect box_rect(box_origin, LayoutSize(inline_text_box_.LogicalWidth(),
                                              inline_text_box_.LogicalHeight()));
   context.Clip(FloatRect(box_rect));
   context.DrawHighlightForText(font, run, FloatPoint(box_origin),
                                box_rect.Height().ToInt(), color,
                                paint_offsets.first, paint_offsets.second);
 }
 
 }  // namespace blink