Rename {first,last}EditablePosition{After,Before}Position... to denote them returned VisiblePosition

Source/core/editing/VisibleSelection.cpp

 /*
  * Copyright (C) 2004, 2005, 2006 Apple Computer, 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 586 matching lines @@
     // The base, start and end are all in the same region.  No adjustment necessary.
     if (baseRoot == startRoot && baseRoot == endRoot)
         return;
 
     // The selection is based in editable content.
     if (baseRoot) {
         // If the start is outside the base's editable root, cap it at the start of that root.
         // If the start is in non-editable content that is inside the base's editable root, put it
         // at the first editable position after start inside the base's editable root.
         if (startRoot != baseRoot) {
-            VisiblePosition first = firstEditablePositionAfterPositionInRoot(m_start, baseRoot);
+            VisiblePosition first = firstEditableVisiblePositionAfterPositionInRoot(m_start, baseRoot);
             m_start = first.deepEquivalent();
             if (m_start.isNull()) {
                 ASSERT_NOT_REACHED();
                 m_start = m_end;
             }
         }
         // If the end is outside the base's editable root, cap it at the end of that root.
         // If the end is in non-editable content that is inside the base's root, put it
         // at the last editable position before the end inside the base's root.
         if (endRoot != baseRoot) {
-            VisiblePosition last = lastEditablePositionBeforePositionInRoot(m_end, baseRoot);
+            VisiblePosition last = lastEditableVisiblePositionBeforePositionInRoot(m_end, baseRoot);
             m_end = last.deepEquivalent();
             if (m_end.isNull())
                 m_end = m_start;
         }
     // The selection is based in non-editable content.
     } else {
         // FIXME: Non-editable pieces inside editable content should be atomic, in the same way that editable
         // pieces in non-editable content are atomic.
 
         // The selection ends in editable content or non-editable content inside a different editable ancestor,
@@ skipping 228 matching lines @@
     sel.showTreeForThis();
 }
 
 void showTree(const WebCore::VisibleSelection* sel)
 {
     if (sel)
         sel->showTreeForThis();
 }
 
 #endif