[Line Layout API] Convert LayoutBlockFlowLine to use new line layout API

third_party/WebKit/Source/core/layout/LayoutBlockFlowLine.cpp

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All right reserved.
  * Copyright (C) 2010 Google Inc. 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
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 265 matching lines @@
         if (r->m_object->isText())
             box = createInlineBoxForText(*r, isOnlyRun);
         else
             box = createInlineBoxForLayoutObject(r->m_object, false, isOnlyRun);
         r->m_box = box;
 
         ASSERT(box);
         if (!box)
             continue;
 
-        if (!rootHasSelectedChildren && box->layoutObject().selectionState() != SelectionNone)
+        if (!rootHasSelectedChildren && box->lineLayoutItem().selectionState() != SelectionNone)
             rootHasSelectedChildren = true;
 
         // If we have no parent box yet, or if the run is not simply a sibling,
         // then we need to construct inline boxes as necessary to properly enclose the
         // run's inline box. Segments can only be siblings at the root level, as
         // they are positioned separately.
-        if (!parentBox || parentBox->layoutObject() != r->m_object->parent()) {
+        if (!parentBox || (!parentBox->lineLayoutItem().isEqual(r->m_object->parent()))) {
             // Create new inline boxes all the way back to the appropriate insertion point.
             parentBox = createLineBoxes(r->m_object->parent(), lineInfo, box);
         } else {
             // Append the inline box to this line.
             parentBox->addToLine(box);
         }
 
         box->setBidiLevel(r->level());
 
         if (box->isInlineTextBox()) {
@@ skipping 1755 matching lines @@
     LayoutUnit logicalLeft = logicalLeftOffsetForLine(logicalHeight(), false);
     LayoutUnit availableLogicalWidth = logicalRightOffsetForLine(logicalHeight(), false) - logicalLeft;
     updateLogicalWidthForAlignment(textAlign, 0, 0, logicalLeft, totalLogicalWidth, availableLogicalWidth, 0);
 
     if (!style()->isLeftToRightDirection())
         return logicalWidth() - logicalLeft;
     return logicalLeft;
 }
 
 }