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

third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 780 matching lines @@
 
   GetDocument().UpdateStyleAndLayout();
 
   LayoutText* text_layout_object = text_node->GetLayoutObject();
   if (!text_layout_object)
     return;
 
   Vector<InlineTextBox*> sorted_text_boxes;
   size_t sorted_text_boxes_position = 0;
 
-  for (InlineTextBox* text_box = text_layout_object->FirstTextBox(); text_box;
-       text_box = text_box->NextTextBox())
+  for (InlineTextBox* text_box : InlineTextBoxesOf(*text_layout_object))
     sorted_text_boxes.push_back(text_box);
 
   // If there is mixed directionality text, the boxes can be out of order,
   // (like Arabic with embedded LTR), so sort them first.
   if (text_layout_object->ContainsReversedText())
     std::sort(sorted_text_boxes.begin(), sorted_text_boxes.end(),
               InlineTextBox::CompareByStart);
   InlineTextBox* box = sorted_text_boxes.IsEmpty()
                            ? 0
                            : sorted_text_boxes[sorted_text_boxes_position];
@@ skipping 1162 matching lines @@
 
 DEFINE_TRACE(CompositeEditCommand) {
   visitor->Trace(commands_);
   visitor->Trace(starting_selection_);
   visitor->Trace(ending_selection_);
   visitor->Trace(undo_step_);
   EditCommand::Trace(visitor);
 }
 
 }  // namespace blink