Introduce InlineTextBoxesOf() for ease of loop over InlineTextBox of LayoutText

third_party/WebKit/Source/core/layout/svg/LayoutSVGInlineText.cpp

 /*
  * Copyright (C) 2006 Oliver Hunt <ojh16@student.canterbury.ac.nz>
  * Copyright (C) 2006 Apple Computer Inc.
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2008 Rob Buis <buis@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 107 matching lines @@
   }
 
   LayoutRect rect =
       text_box->LocalSelectionRect(caret_offset - 1, caret_offset);
   LayoutUnit x = box->IsLeftToRightDirection() ? rect.MaxX() : rect.X();
   return LayoutRect(x, rect.Y(), GetFrameView()->CaretWidth(), rect.Height());
 }
 
 FloatRect LayoutSVGInlineText::FloatLinesBoundingBox() const {
   FloatRect bounding_box;
-  for (InlineTextBox* box = FirstTextBox(); box; box = box->NextTextBox())
+  for (InlineTextBox* box : InlineTextBoxesOf(*this))
     bounding_box.Unite(FloatRect(box->FrameRect()));
   return bounding_box;
 }
 
 LayoutRect LayoutSVGInlineText::LinesBoundingBox() const {
   return EnclosingLayoutRect(FloatLinesBoundingBox());
 }
 
 bool LayoutSVGInlineText::CharacterStartsNewTextChunk(int position) const {
   DCHECK_GE(position, 0);
@@ skipping 31 matching lines @@
   // Map local point to absolute point, as the character origins stored in the
   // text fragments use absolute coordinates.
   FloatPoint absolute_point(point);
   absolute_point.MoveBy(containing_block->Location());
 
   float closest_distance = std::numeric_limits<float>::max();
   float closest_distance_position = 0;
   const SVGTextFragment* closest_distance_fragment = nullptr;
   SVGInlineTextBox* closest_distance_box = nullptr;
 
-  for (InlineTextBox* box = FirstTextBox(); box; box = box->NextTextBox()) {
+  for (InlineTextBox* box : InlineTextBoxesOf(*this)) {
     if (!box->IsSVGInlineTextBox())
       continue;
 
     SVGInlineTextBox* text_box = ToSVGInlineTextBox(box);
     for (const SVGTextFragment& fragment : text_box->TextFragments()) {
       FloatRect fragment_rect = fragment.BoundingBox(baseline);
 
       float distance = 0;
       if (!fragment_rect.Contains(absolute_point))
         distance = fragment_rect.SquaredDistanceTo(absolute_point);
@@ skipping 232 matching lines @@
 }
 
 PassRefPtr<StringImpl> LayoutSVGInlineText::OriginalText() const {
   RefPtr<StringImpl> result = LayoutText::OriginalText();
   if (!result)
     return nullptr;
   return NormalizeWhitespace(result);
 }
 
 }  // namespace blink