Rename childNodeCount() / childNode() methods for clarity

Source/web/WebFrameImpl.cpp

 /*
  * Copyright (C) 2009 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1700 matching lines @@
         m_findMatchesCache.append(FindMatch(resultRange.get(), m_lastMatchCount + matchCount));
 
         // Set the new start for the search range to be the end of the previous
         // result range. There is no need to use a VisiblePosition here,
         // since findPlainText will use a TextIterator to go over the visible
         // text nodes.
         searchRange->setStart(resultRange->endContainer(exceptionState), resultRange->endOffset(exceptionState), exceptionState);
 
         Node* shadowTreeRoot = searchRange->shadowRoot();
         if (searchRange->collapsed(exceptionState) && shadowTreeRoot)
-            searchRange->setEnd(shadowTreeRoot, shadowTreeRoot->childNodeCount(), exceptionState);
+            searchRange->setEnd(shadowTreeRoot, shadowTreeRoot->countChildren(), exceptionState);
 
         m_resumeScopingFromRange = resultRange;
         timedOut = (currentTime() - startTime) >= maxScopingDuration;
     } while (!timedOut);
 
     // Remember what we search for last time, so we can skip searching if more
     // letters are added to the search string (and last outcome was 0).
     m_lastSearchString = searchText;
 
     if (matchCount > 0) {
@@ skipping 786 matching lines @@
 
         // There is a possibility that the frame being detached was the only
         // pending one. We need to make sure final replies can be sent.
         flushCurrentScopingEffort(m_findRequestIdentifier);
 
         cancelPendingScopingEffort();
     }
 }
 
 } // namespace blink