Rename childNodeCount() / childNode() methods for clarity

Source/core/page/SpatialNavigation.cpp

 /*
  * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Antonio Gomes <tonikitoo@webkit.org>
  *
  * 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
@@ skipping 409 matching lines @@
 }
 
 bool isScrollableNode(const Node* node)
 {
     ASSERT(!node->isDocumentNode());
 
     if (!node)
         return false;
 
     if (RenderObject* renderer = node->renderer())
-        return renderer->isBox() && toRenderBox(renderer)->canBeScrolledAndHasScrollableArea() && node->hasChildNodes();
+        return renderer->isBox() && toRenderBox(renderer)->canBeScrolledAndHasScrollableArea() && node->hasChildren();
 
     return false;
 }
 
 Node* scrollableEnclosingBoxOrParentFrameForNodeInDirection(FocusType type, Node* node)
 {
     ASSERT(node);
     Node* parent = node;
     do {
         if (parent->isDocumentNode())
@@ skipping 290 matching lines @@
     LayoutRect rect = virtualRectForDirection(type, rectToAbsoluteCoordinates(area->document().frame(), area->computeRect(area->imageElement()->renderer())), 1);
     return rect;
 }
 
 HTMLFrameOwnerElement* frameOwnerElement(FocusCandidate& candidate)
 {
     return candidate.isFrameOwnerElement() ? toHTMLFrameOwnerElement(candidate.visibleNode) : 0;
 };
 
 } // namespace WebCore