[Editing][DOM][CodeHealth] Make Node::hasEditableStyle global functions.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * 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 1070 matching lines @@
 
     InlineTextBox* textBox = toInlineTextBox(box);
     return Position::editingPositionOf(box->getLineLayoutItem().nonPseudoNode(), start ? textBox->start() : textBox->start() + textBox->len());
 }
 
 static inline bool isEditingBoundary(LayoutObject* ancestor, LineLayoutBox child)
 {
     ASSERT(!ancestor || ancestor->nonPseudoNode());
     ASSERT(child && child.nonPseudoNode());
     return !ancestor || !ancestor->parent() || (ancestor->hasLayer() && ancestor->parent()->isLayoutView())
-        || ancestor->nonPseudoNode()->hasEditableStyle() == child.nonPseudoNode()->hasEditableStyle();
+        || hasEditableStyle(*ancestor->nonPseudoNode()) == hasEditableStyle(*child.nonPseudoNode());
 }
 
 // FIXME: This function should go on LayoutObject.
 // Then all cases in which positionForPoint recurs could call this instead to
 // prevent crossing editable boundaries. This would require many tests.
 PositionWithAffinity LayoutBlock::positionForPointRespectingEditingBoundaries(LineLayoutBox child, const LayoutPoint& pointInParentCoordinates)
 {
     LayoutPoint childLocation = child.location();
     if (child.isInFlowPositioned())
         childLocation += child.offsetForInFlowPosition();
@@ skipping 762 matching lines @@
         for (TrackedLayoutBoxListHashSet::const_iterator it = positionedDescendantSet->begin(); it != end; ++it) {
             LayoutBox* currBox = *it;
             ASSERT(!currBox->needsLayout());
         }
     }
 }
 
 #endif
 
 } // namespace blink